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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+8.7)/1.1-7=0
We multiply all the terms by the denominator
(x+8.7)-7*1.1=0
We add all the numbers together, and all the variables
(x+8.7)-7.7=0
We get rid of parentheses
x+8.7-7.7=0
We add all the numbers together, and all the variables
x+1=0
We move all terms containing x to the left, all other terms to the right
x=-1
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