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If x+2y=12 and x-y=3 find the value of x+y

If x+2y=12 and x-y=3 find the value of x+y
asked 58.3k views
2 votes
If x+2y=12 and x-y=3 find the value of x+y

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User JefClaes
by
7.5k points

1 Answer

2 votes
The answer would be 9

x-y=3
x=3+y

X+2y=12
(3+y) + 2y=12
3y+3=12
3y=9
Y=3

X-(3)=3
X=6

X+y
6+3=9
answered
User Iammichael
by
8.5k points
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