SOLUTION: x+y=-9 x-y=14 solve bu substitution

SOLUTION: x+y=-9 x-y=14 solve bu substitution

Algebra.Com

Question 45690: x+y=-9
x-y=14
solve bu substitution
Answer by venugopalramana(3286) (Show Source): You can put this solution on YOUR website!
x+y=-9 ...X=-9-Y
x-y=14
-9-Y-Y=14
2Y=-9-14=-23
Y=-23/2=-11.5
X=-9+11.5=2.5
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