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Solve the problem 7x-4y=-7 5x+y=22
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3 votes
Solve the problem
7x-4y=-7
5x+y=22

User Scottkosty
by
9.6k points

1 Answer

6 votes

Answer:

x=3, y=7. (3, 7).

Explanation:

7x-4y=-7

5x+y=22

--------------

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

User Hype
by
8.5k points
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