SOLUTION: How do you do substitution with linear systems? y=-4 2x-2y=14

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Question 534230: How do you do substitution with linear systems?
y=-4
2x-2y=14
Answer by Maths68(1474) About Me  (Show Source):
You can put this solution on YOUR website!
y=-4
2x-2y=14
subtitute the value of y in above equation
2x-2%28-4%29=14
2x%2B8=14
2x=14-8
2x=6
x=6%2F2
x=3

x,y=(3,-4)


Check
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Put the values of x and y in the following equation
2x-2y=14
2%283%29-2%28-4%29=14
6%2B8=14
14=14