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-6x-21=51+31
We move all terms to the left:
-6x-21-(51+31)=0
We add all the numbers together, and all the variables
-6x-21-82=0
We add all the numbers together, and all the variables
-6x-103=0
We move all terms containing x to the left, all other terms to the right
-6x=103
x=103/-6
x=-17+1/6
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