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7+x/10=9/10
We move all terms to the left:
7+x/10-(9/10)=0
We add all the numbers together, and all the variables
x/10+7-(+9/10)=0
We get rid of parentheses
x/10+7-9/10=0
We multiply all the terms by the denominator
x-9+7*10=0
We add all the numbers together, and all the variables
x+61=0
We move all terms containing x to the left, all other terms to the right
x=-61
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