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7x-15=18-
We move all terms to the left:
7x-15-(18-)=0
We add all the numbers together, and all the variables
7x-15-0=0
We add all the numbers together, and all the variables
7x-15=0
We move all terms containing x to the left, all other terms to the right
7x=15
x=15/7
x=2+1/7
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