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03-11-2019
Mathematics

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What’s the solution to -5x-y=21 when y is equal to 6+4x

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wendyshi555 wendyshi555

03-11-2019

Answer:

x= -3, y=-6

Step-by-step explanation:

In the equation -5x-y=21, substitute y for 6+4x:

-5x- (6+4x) = 21

^^Solve for x.

X should come out to -3. To find y, plug -3 into either equation (-5x-y=21 or y=6+4x) and y should equal -6.

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