![Trending Articles on Technical and Non Technical topics](/images/trending_categories.jpeg)
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Solve for $x$ in the expression
$\frac{9x-7}{3x+5}=\frac{3x-4}{x+6}$
Given:
$\frac{9x-7}{3x+5}=\frac{3x-4}{x+6}$
To find Value of $x$
Solution:
By Cross multiplication,
$ (9 x - 7) ( x + 6) = (3 x - 4) (3 x + 5 )$
=$9 x^{2} - 7 x + 54 x - 42 = 9 x^{2} - 12 x + 15 x - 20$
=$9 x^{2} - 7 x + 54 x - 42 - ( 9 x^{2} - 12 x + 15 x - 20)$ = 0
=$9 x ^{2} - 7 x + 54 x - 42 - 9 x ^{2} + 12 x - 15 x + 20 = 0$ [Since, $9 x ^{2} -9 x^{2} = 0$]
=$- 7 x + 54 x + 12 x - 15 x - 42 + 20 = 0$
=$47 x - 3 x - 22 = 0$
=$44 x - 22 = 0$
=$44 x = 22$
=>$ x = \frac{22 }{44}$
Therefore, $x = \frac{1}{2}$
Advertisements