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6x-4=9x+12.
We move all terms to the left:
6x-4-(9x+12.)=0
We add all the numbers together, and all the variables
6x-(9x+12)-4=0
We get rid of parentheses
6x-9x-12-4=0
We add all the numbers together, and all the variables
-3x-16=0
We move all terms containing x to the left, all other terms to the right
-3x=16
x=16/-3
x=-5+1/3
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