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7x=-7/15
We move all terms to the left:
7x-(-7/15)=0
We get rid of parentheses
7x+7/15=0
We multiply all the terms by the denominator
7x*15+7=0
Wy multiply elements
105x+7=0
We move all terms containing x to the left, all other terms to the right
105x=-7
x=-7/105
x=-1/15
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