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112.5=11.25x+7.5(6)
We move all terms to the left:
112.5-(11.25x+7.5(6))=0
We get rid of parentheses
-11.25x-7.56+112.5=0
We add all the numbers together, and all the variables
-11.25x+104.94=0
We move all terms containing x to the left, all other terms to the right
-11.25x=-104.94
x=-104.94/-11.25
x=9+2.1834319526627/6.6568047337278
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