SOLUTION: 2y=4x+8 x-3y= -7

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Question 272133: 2y=4x+8
x-3y= -7
Answer by oberobic(2304) About Me  (Show Source):
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2y = 4x +8
x - 3y = -7
.
rearranging
-4x + 2y = 8
x - 3y = -7
.
multiply the second equation by 4
4x - 12y = -28
.
so, we have
-4x + 2y = 8
4x - 12y = -28
.
add them
-10y = -20
y = 2
.
substitute
2(2) = 4x + 8
4 = 4x + 8
-4 = 4x
x = -1
.
checking
2(2) = 4(-1) + 8
4 = -4 + 8 = 4 TRUE
.
-1 -3(2) = -7 TRUE
.
Answer:
y = 2
x = -1