Answer:
x=3, y=7. (3, 7).
Step-by-step explanation:
7x-4y=-7
5x+y=22
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y=22-5x
7x-4(22-5x)=-7
7x-88+20x=-7
27x=-7+88
27x=81
x=81/27
x=3
7(3)-4y=-7
21-4y=-7
4y=21-(-7)
4y=21+7
4y=28
y=28/4
y=7
