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105=7x-9
We move all terms to the left:
105-(7x-9)=0
We get rid of parentheses
-7x+9+105=0
We add all the numbers together, and all the variables
-7x+114=0
We move all terms containing x to the left, all other terms to the right
-7x=-114
x=-114/-7
x=16+2/7
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