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2+x/5=-13
We move all terms to the left:
2+x/5-(-13)=0
We add all the numbers together, and all the variables
x/5+15=0
We multiply all the terms by the denominator
x+15*5=0
We add all the numbers together, and all the variables
x+75=0
We move all terms containing x to the left, all other terms to the right
x=-75
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