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12x+40=25-(14+75)
We move all terms to the left:
12x+40-(25-(14+75))=0
We add all the numbers together, and all the variables
12x+40-(25-89)=0
We add all the numbers together, and all the variables
12x+104=0
We move all terms containing x to the left, all other terms to the right
12x=-104
x=-104/12
x=-8+2/3
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