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X+7=-5.X
We move all terms to the left:
X+7-(-5.X)=0
We add all the numbers together, and all the variables
X-(-5X)+7=0
We get rid of parentheses
X+5X+7=0
We add all the numbers together, and all the variables
6X+7=0
We move all terms containing X to the left, all other terms to the right
6X=-7
X=-7/6
X=-1+1/6
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