X+2y=12.30

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Solution for X+2y=12.30 equation: 



X+2X=12.30

We move all terms to the left:

X+2X-(12.30)=0

We add all the numbers together, and all the variables

X+2X-(12.3)=0

We add all the numbers together, and all the variables

3X-12.3=0

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

3X=12.3

X=12.3/3

X=4+0.3/3

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