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a+1/7=-6/7
We move all terms to the left:
a+1/7-(-6/7)=0
We get rid of parentheses
a+1/7+6/7=0
We multiply all the terms by the denominator
a*7+1+6=0
We add all the numbers together, and all the variables
a*7+7=0
Wy multiply elements
7a+7=0
We move all terms containing a to the left, all other terms to the right
7a=-7
a=-7/7
a=-1
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