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-0.6x+3=4.5x-2.1
We move all terms to the left:
-0.6x+3-(4.5x-2.1)=0
We get rid of parentheses
-0.6x-4.5x+2.1+3=0
We add all the numbers together, and all the variables
-5.1x+5.1=0
We move all terms containing x to the left, all other terms to the right
-5.1x=-5.1
x=-5.1/-5.1
x=1
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