Question

Solve the system by substitution. *

Answer 1

Answer:

(-3,-1)

Step-by-step explanation:

Given equations are :

$3x - 2y=-7\ ....(1)\\\\y=-7x - 22...(2)$

Put the value of y from equation (2) to equation (1), so,

$3x - 2(-7x - 22)=-7\\\\3x+14x+44=-7$        

Taking variables on one side and constant on another side.    

$17x=-7-44\\\\17x=-51\\\\x=-3$

Put x = -3 in equation (2) i.e.

$y=-7(-3) - 22\\\\y=-1$

So, the value of x and y are (-3) and (-1) respectively.