Verified Answer :

TaylorBayley

y=6x (1)
y=5x-7 (2)

Substitute y into (2)
(6x)=5x-7 -- subtract 5x from both sides
x=-7

Sub x into 1
y=6(-7)
y=-42

x=-7
y=-42

First substitute 'y' in 2nd equation by right side of 1st one and you get:
\(Y=6x\)
\(6x=5x+7\)
now substract 5x from both sides of 2nd equal and you get:
\(6x-5x=5x+7-5x\)
as a result of the equal above you get:
\(x=7\)
now substitute x in very first equation by the result from above (x=7):
\(Y=6*7=42\)
\(x=7\)

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