X=3+6=9y=10.5+21=31.5

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Solution for X=3+6=9y=10.5+21=31.5 equation: 



X=3+6=9X=10.5+21=31.5

We move all terms to the left:

X-(3+6)=0

We add all the numbers together, and all the variables

X-9=0

We move all terms containing X to the left, all other terms to the right

X=9

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