Question

Find the solution to the system of equations-2 + 2y = -4 3x + 3y = -18

Answer 1

Answer:

x = -2 and y = -4

Step-by-step explanation:

use elimination or subatitution method

Answer 2

Answer:

$\boxed{x = -2~~and~~ y = -4}$

Step-by-step explanation:

-2x + 2y = -4 (times 3) -6x + 6y = -12

3x + 3y = -18 (times 2) 6x + 6y = -36

.

-6x + 6y = -12

6x + 6y = -36 +

12y = -48

$y = \frac{-48}{12}$

y = -4

.

Substitute the value of y to the one of equations

-2x + 2(-4) = -4

-2x - 8 = -4

-2x = -4 + 8

-2x = 4

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

x = -2