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x+(0.99*27)=42.72
We move all terms to the left:
x+(0.99*27)-(42.72)=0
We add all the numbers together, and all the variables
x+(26.73)-(42.72)=0
We add all the numbers together, and all the variables
x-15.99=0
We move all terms containing x to the left, all other terms to the right
x=15.99
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