Understanding Why (5 - x)/(x - 5) Equals -1: Common Algebra Mistake
Explore the simplification of (5 - x)/(x - 5) and understand why it equals -1. This video addresses a common mistake made by students in algebra to help you avoid losing marks.

Nand Kishore Classes
699 views β’ Aug 24, 2025

About this video
Why Does (5 - x)/(x - 5) = -1?| Simplification Questions | Algebra Common mistake made by students
βοΈDonβt lose marks because of this simple algebra mistake!βοΈ
In this video, we explain why the fraction (5βx)/(xβ5) is not equal to 1, and how you can correctly simplify it to get β1
β1. This is a classic example where misunderstanding subtraction and negative signs causes confusion in algebra.
Youβll learn:
β How to handle expressions with reversed terms
β Why subtraction order matters in algebra
β Tricks to avoid this mistake in exams and homework
This lesson is perfect for Class 9-12 students, JEE aspirants, and anyone struggling with algebra.
Multiplication in just seconds
Simplification questions with solutions
How to solve question containing multiplication of many numbers
multiplication tricks
How to solve questions
Simple and easy tricks to solve competitive exams
Competitive exams questions with solutions
Join this channel to get access to perks:
https://www.youtube.com/channel/UC80ishU3EeF4eGIJpr_yG4g/join
Welcome to Nand Kishore Classes
Download our app from playstore
https://play.google.com/store/apps/de...
To attend our Live Math Group / Individual class, please click at following link to fill the form.
https://forms.gle/FFRPDgMmTHq87MYu7
We will contact you soon.
Click at below links to download the PDFs containing YouTube Links
1. Basic Math
http://nandkishoreclasses.com/basicma...
2. Shortcut Tricks & Reasoning
http://nandkishoreclasses.com/shorttr...
3. Kids Activities
http://nandkishoreclasses.com/kidsact...
Thanks
Nand Kishore
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βοΈDonβt lose marks because of this simple algebra mistake!βοΈ
In this video, we explain why the fraction (5βx)/(xβ5) is not equal to 1, and how you can correctly simplify it to get β1
β1. This is a classic example where misunderstanding subtraction and negative signs causes confusion in algebra.
Youβll learn:
β How to handle expressions with reversed terms
β Why subtraction order matters in algebra
β Tricks to avoid this mistake in exams and homework
This lesson is perfect for Class 9-12 students, JEE aspirants, and anyone struggling with algebra.
Multiplication in just seconds
Simplification questions with solutions
How to solve question containing multiplication of many numbers
multiplication tricks
How to solve questions
Simple and easy tricks to solve competitive exams
Competitive exams questions with solutions
Join this channel to get access to perks:
https://www.youtube.com/channel/UC80ishU3EeF4eGIJpr_yG4g/join
Welcome to Nand Kishore Classes
Download our app from playstore
https://play.google.com/store/apps/de...
To attend our Live Math Group / Individual class, please click at following link to fill the form.
https://forms.gle/FFRPDgMmTHq87MYu7
We will contact you soon.
Click at below links to download the PDFs containing YouTube Links
1. Basic Math
http://nandkishoreclasses.com/basicma...
2. Shortcut Tricks & Reasoning
http://nandkishoreclasses.com/shorttr...
3. Kids Activities
http://nandkishoreclasses.com/kidsact...
Thanks
Nand Kishore
Simplification questions with solutions,
tricks for simplification,
concept clarification,
Common mistake while solving clarification
Simplification questions with solutions
Simplification tricks
nand kishore classes,
basic mathematic concepts,
maths solutions by nand kishore classes,
mathematics,
important for competitive exams,
simplification questions,
rrb, ssc, ibps, simplification questions,
how to solve questions using algebraic identities,
simple and easy trick to solve simplification questions,
How to find multiplication,
nand kishore classes,
maths solutions by nand kishore classes,
mathematics,
important for competitive exams,
basic mathematics concepts,
explaining trick, how to use tricks,
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Video Information
Views
699
Likes
34
Duration
5:43
Published
Aug 24, 2025
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