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2 years ago

NEEDING HELP ASAP PLEASE :( click on photo

Mathematics

1 answer:

LiRa [457]2 years ago

6 0

9514 1404 393

Answer:

(1, 1)

Step-by-step explanation:

Did you watch the video?

The y-coefficients have opposite signs and one is a multiple of the other. It is convenient to divide the second equation by 2 and add that to the first.

(5x -2y) +1/2(4x +4y) = (3) +1/2(8)

7x = 7 . . . . simplify

x = 1 . . . . . divide by 7

4(1) +4y = 8 . . . . substitute for x in the second equation

4y = 4 . . . . . . . . subtract 4

y = 1 . . . . . . . . . . divide by 4

The solution is (x, y) = (1, 1).

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