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x/2.8=4.2
We move all terms to the left:
x/2.8-(4.2)=0
We add all the numbers together, and all the variables
x/2.8-4.2=0
We multiply all the terms by the denominator
x-(4.2)*2.8=0
We add all the numbers together, and all the variables
x-11.76=0
We move all terms containing x to the left, all other terms to the right
x=11.76
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