(5x - 2y = 22 8x - 2y = 28 Please!! Urgent

Mathematics

1 answer:

alexandr402 [8]2 years ago

6 0

9514 1404 393

Answer:

(x, y) = (2, -6)

Step-by-step explanation:

Subtract the first equation from the second.

(8x -2y) -(5x -2y) = (28) -(22)

3x = 6

x = 2

Substitute this into either equation and solve for y.

8(2) -2y = 28

8 -y = 14 . . . . . . . . divide by 2

y = 8 -14 = -6 . . . . add y-14 to both sides

The solution is (x, y) = (2, -6).

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I like a graphing calculator for a quick solution to such problems.

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Extra info

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