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7(x+22)-3x-30=300
We move all terms to the left:
7(x+22)-3x-30-(300)=0
We add all the numbers together, and all the variables
-3x+7(x+22)-330=0
We multiply parentheses
-3x+7x+154-330=0
We add all the numbers together, and all the variables
4x-176=0
We move all terms containing x to the left, all other terms to the right
4x=176
x=176/4
x=44
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