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3x=12.30
We move all terms to the left:
3x-(12.30)=0
We add all the numbers together, and all the variables
3x-(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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