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55-7x=17+12
We move all terms to the left:
55-7x-(17+12)=0
We add all the numbers together, and all the variables
-7x+55-29=0
We add all the numbers together, and all the variables
-7x+26=0
We move all terms containing x to the left, all other terms to the right
-7x=-26
x=-26/-7
x=3+5/7
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