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How to solve 2x+y=2 and x+y=-1
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How to solve 2x+y=2 and x+y=-1
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Feb 12, 2016
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How to solve 2x+y=2 and x+y=-1
Mathematics
middle-school
SUX
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1
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so
2x+y=2
x+y=-1
multiply secion equation by -1
-x-y=1
add to first equation
2x-x+y-y=2+1
x=3
subsitute
3+y=-1
subtract 3
y=-4
x=3
y=-4
Franey
answered
Feb 17, 2016
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Franey
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