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3.45+x=11.20
We move all terms to the left:
3.45+x-(11.20)=0
We add all the numbers together, and all the variables
x+3.45-(11.2)=0
We add all the numbers together, and all the variables
x-7.75=0
We move all terms containing x to the left, all other terms to the right
x=7.75
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