SOLUTION: x-2y=-4 2x-y=1

Question 203039: x-2y=-4
2x-y=1
Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
(1) x-2y=-4,,,,,x= (2y-4)
(2) 2x-y=1
.
subst (1) into (2)
.
2(2y-4) -y=1
4y-8-y=1
3y =9
y=3
.
from(1),,,,x=2(3) -4 =2
.
check(1),,,2-2(3) = -4,,,,,ok
(2) 2(2)-3 =1,,,,,ok

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