Question

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

Answer 1

x= -3, y=-6

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.