SOLUTION: solve system by substitution {3x-y=6 x+2y=2

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Question 838: solve system by substitution
{3x-y=6
x+2y=2
Answer by pushpaharan(47) About Me  (Show Source):
You can put this solution on YOUR website!
3x-y=6 --- (1)
x+2y=2 --- (2)
to make y coefficent multiply the eqation (1) by 2
you get 6x-2y = 12 ---(3)
add (2)+(3)
7x = 14
x=2
sub x=2 into equation (2)
2 +2y =2
2y=0
y=0
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