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2x-5x=6*2
We move all terms to the left:
2x-5x-(6*2)=0
We add all the numbers together, and all the variables
2x-5x-12=0
We add all the numbers together, and all the variables
-3x-12=0
We move all terms containing x to the left, all other terms to the right
-3x=12
x=12/-3
x=-4
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