Cinclair711
Cinclair711
09-12-2014
Mathematics
contestada
X-y=1
X+y=3 Elimination
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fenniehuynh
fenniehuynh
09-12-2014
x-y=1
x+y=3
You see the y's can cancel out. So add it together and you have:
2x=4
x=2
Now that you have x, plug it in to one of the equations to find y.
I will plug it into the first one.
(2)-y=1
-y=-1
y=1
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