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0.3x+0.9=0.6x+1.8
We move all terms to the left:
0.3x+0.9-(0.6x+1.8)=0
We get rid of parentheses
0.3x-0.6x-1.8+0.9=0
We add all the numbers together, and all the variables
-0.3x-0.9=0
We move all terms containing x to the left, all other terms to the right
-0.3x=0.9
x=0.9/-0.3
x=-3+1.1102230246252E-16/0.3
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