Answer:
x = 1
y = -2
Step-by-step explanation:
3y + 7 = x
5x + 4y = -3
Let's use substitution method, plug in the top equation x into the bottom one
5(3y + 7) + 4y = -3
15y + 35 + 4y = -3
19y + 35 = -3
Subtract 35 from both sides
19y + 35 = -3
- 35 - 35
19y = -38
Divide both sides by 19
19y/19 = -38/19
y = -2
Plug in the new y into one of the original equations, I'll use the top one
3(-2) + 7 = x
-6 + 7 = x
x = 1
