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0.4x+4.5=0.3x+2.9
We move all terms to the left:
0.4x+4.5-(0.3x+2.9)=0
We get rid of parentheses
0.4x-0.3x-2.9+4.5=0
We add all the numbers together, and all the variables
0.1x+1.6=0
We move all terms containing x to the left, all other terms to the right
0.1x=-1.6
x=-1.6/0.1
x=-16
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