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x/0.4=8.7
We move all terms to the left:
x/0.4-(8.7)=0
We add all the numbers together, and all the variables
x/0.4-8.7=0
We multiply all the terms by the denominator
x-(8.7)*0.4=0
We add all the numbers together, and all the variables
x-3.48=0
We move all terms containing x to the left, all other terms to the right
x=3.48
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