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(-11)+x/(-7)=-15
We move all terms to the left:
(-11)+x/(-7)-(-15)=0
We add all the numbers together, and all the variables
x/(-7)+4=0
We multiply all the terms by the denominator
x+4*(-7)=0
We add all the numbers together, and all the variables
x-28=0
We move all terms containing x to the left, all other terms to the right
x=28
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