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-0.6(1.2x+4.5)-3(2.8x-4)=0
We multiply parentheses
-0.6x-6x-2.7+12=0
We add all the numbers together, and all the variables
-6.6x+9.3=0
We move all terms containing x to the left, all other terms to the right
-6.6x=-9.3
x=-9.3/-6.6
x=1+1/2.4444444444444
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