SOLUTION: X + Y = 10 , 3X + Y = 12 I need some help trying to figure these problems out can some one please help me

Question 353542: X + Y = 10 , 3X + Y = 12
I need some help trying to figure these problems out can some one please help me
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
X + Y = 10 , 3X + Y = 12
...
you have to eliminate either x or y . to elimiinate y we multiply equation 1 by -1
we get -x-y=-10.
add it to equation 2
3x+y=12
-x+3x-y+y=-10+12
2x=2
x=1
...
x+y =10
plug value of x
1+y =10
y=9
...
m.ananth@hotmail.ca
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