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0.3x-3=0.9x
We move all terms to the left:
0.3x-3-(0.9x)=0
We add all the numbers together, and all the variables
0.3x-(+0.9x)-3=0
We get rid of parentheses
0.3x-0.9x-3=0
We add all the numbers together, and all the variables
-0.6x-3=0
We move all terms containing x to the left, all other terms to the right
-0.6x=3
x=3/-0.6
x=-5
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