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x/2.5=3.9
We move all terms to the left:
x/2.5-(3.9)=0
We add all the numbers together, and all the variables
x/2.5-3.9=0
We multiply all the terms by the denominator
x-(3.9)*2.5=0
We add all the numbers together, and all the variables
x-9.75=0
We move all terms containing x to the left, all other terms to the right
x=9.75
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