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-6x-21=51+3
We move all terms to the left:
-6x-21-(51+3)=0
We add all the numbers together, and all the variables
-6x-21-54=0
We add all the numbers together, and all the variables
-6x-75=0
We move all terms containing x to the left, all other terms to the right
-6x=75
x=75/-6
x=-12+1/2
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