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0=12+4.5x
We move all terms to the left:
0-(12+4.5x)=0
We add all the numbers together, and all the variables
-(4.5x+12)+0=0
We add all the numbers together, and all the variables
-(4.5x+12)=0
We get rid of parentheses
-4.5x-12=0
We move all terms containing x to the left, all other terms to the right
-4.5x=12
x=12/-4.5
x=-2+3/4.5
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