Question

If (5x- 3/4) = (2x- 2/3) then the value of 9x is​

Answer 1

Answer:

( 5x - 3 / 4 ) = ( 2x - 2 / 3 )

5x - 3 / 4 = 2x - 2 / 3

Cross Multiplication :

15x - 9 = 8x - 8

15x - 8x = - 8 + 9

7x = 1

x = 1 / 7

Value of 9x :

Substitute x value :

9 ( 1 / 2 )

4.5

Answer 2

$5x - \frac{3}{4} = 2x - \frac{2}{3}$

$5x - 2x = \frac{ - 2}{3} + \frac{3}{4}$

$3x = \frac{ - 8 + 9}{12}$

$3x \times 12 = 1$

$36x = 1$

$x = \frac{1}{36}$

$9x = 9 \times \frac{1}{36}$

$= \frac{9}{36}$

$= \frac{1}{4}$