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-3x-3x=37-7
We move all terms to the left:
-3x-3x-(37-7)=0
We add all the numbers together, and all the variables
-3x-3x-30=0
We add all the numbers together, and all the variables
-6x-30=0
We move all terms containing x to the left, all other terms to the right
-6x=30
x=30/-6
x=-5
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