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Question 469862: 2x+y=1
x+y=3
Answer by sofiyac(983)   (Show Source):
You can put this solution on YOUR website! 2x+y=1
x+y=3 Multiply second equaiton by -2 and add it to the first one
2x+y=1
-2x-2y=-6 now add them
-y=-5 divide each side by -1
y=5 now plug that into either of the original equations and solve for x
x+5=3
x=-5+3
x=-2
so the solution is (-2,5), that's where both lines cross
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