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-45x-45=-75x+7
We move all terms to the left:
-45x-45-(-75x+7)=0
We get rid of parentheses
-45x+75x-7-45=0
We add all the numbers together, and all the variables
30x-52=0
We move all terms containing x to the left, all other terms to the right
30x=52
x=52/30
x=1+11/15
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