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8.7+x/1.1=7
We move all terms to the left:
8.7+x/1.1-(7)=0
We add all the numbers together, and all the variables
x/1.1+1.7=0
We multiply all the terms by the denominator
x+(1.7)*1.1=0
We add all the numbers together, and all the variables
x+1.87=0
We move all terms containing x to the left, all other terms to the right
x=-1.87
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