Explanation:
this is very easy
2y=6
y=2/6=3
so ,
3(x+y)=12
3x+3y=12
3x+3+3=12
3x+9=12
3x=12-9
3x=3
x=3/3
x=1
Answer
y=3 x=1
3(x+3)=12
subtract 9 from both sides to get...
divide 3 from both sides to get...
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