Question

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14x+5y=31
2x−3y=−29
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Answer 1

x = -1, y = 0=9

Explanation:

Multiply the second equation by 7 and subtract the two.

14 x + 5 y = 31

- (14 x - 21 y = -203)

This gives 26 y = 234. Divide both sides by 26. y = 9

Then substitute y into any equation. I'll use

2 x - 3 y = -29

2 x -3(9) = -29

2 x - 27 = -29

2 x = -2

x = -1