Question

If (x+1) /(x-1)=9 / 7 , then x​

Answer 1

Step-by-step explanation:

(x+1) /(x-1)=9 / 7

(x+1 ) × 7 = 9 ×( x-1)

7x + 7 = 9x - 9

7x - 9x = -9 -7

-2x = -16

2x = 16

x = 16/2

x = 8

Answer 2

Answer:

Solution:-

$\frac{(x + 1)}{(x - 1)} = \frac{9}{7}$

Cross multiply

$7(x + 1) = 9(x - 1)$

$7x + 7 \: \: \: \: = 9x - 9$

$7x - 9x \: \: = - 9 - 7$

$- 2x \: \: \: \: \: \: \: \: = - 16$

$x \: \: \: \: \: \: \: \: \: \: \: \: \: \:= \frac{( - 16)}{( - 2)}$

$x \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 8$

Step-by-step explanation:

Hope this helps you.

# By Sparkly Princess