Question

Comparing Methods to solving systems.

Answer 1

Answer:

$x = - 1 \\ y = 1$

Step-by-step explanation:

$x - y = - 2$

$x = y - 2$

$7x + 2y = - 5$

$7(y - 2) + 2y = - 5$

$7y - 14 + 2y = - 5$

$9y = 14 - 5$

$9y = 9$

$y = \frac{9}{9} = 1$

$x = y - 2 = 1 - 2 = - 1$