Question

solve both questions ​

Answer 1

Answer:

( 4/3 , 3/2 )

Step-by-step explanation:

17). 2x - y = - 2 ⇔ y = 2x + 2

3x - y  + 2 = 0 ⇔ y = 3x + 2

18). $\frac{2}{x-1}$ - $\frac{1}{y-1}$ = 4 (x ≠ 1, y ≠ 1)

$\frac{4}{x-1}$ - $\frac{1}{y-1}$ = 10 (x ≠ 1, y ≠ 1)

Let $\frac{1}{x-1}$ = a and $\frac{1}{y-1}$ = b

2a - b = 4 ..... (1)

4a - b = 10 ..... (2)

(2) - (1)

2a = 6 ⇒ a = 3

6 - b = 4 ⇒ b = 2

$\frac{1}{x-1}$ = 3 ⇒ 3(x - 1) = 1 ⇒ x = 4/3

$\frac{1}{y-1}$ = 2 ⇒ 2y - 2 = 1 ⇒ y = 3/2

( 4/3 , 3/2 )