Question

Solve the following equation-7x-4y=-4 -9x-5y=-6

Answer 1

Answer:

$\boxed{x = 4~~and~~ y = -6}$

.

Step-by-step explanation:

-7x - 4y = -4 (times 5) -35x - 20y = -20

-9x - 5y = -6 (times 4) -36x - 20y = -24

.

Eliminate both equations

$-35x - 20y = -20$

-36x - 20y = -24    

$x = 4$

.

Substitute the value of x to one of equations

$-7x - 4y = -4$

$-7(4) - 4y = -4$

$-28 - 4y = -4$

$-4y = - 4 + 28$

$-4y = 24$

$y = \frac{24}{-4}$

$y = -6$

Answer 2

Step-by-step explanation:

ib2j2nwj wjwjw wjw w wiw w akwbysks soshsiw sksns sks sos sisIyah lah s ais ssj sj