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0.3x=0.81
We move all terms to the left:
0.3x-(0.81)=0
We add all the numbers together, and all the variables
0.3x-0.81=0
We move all terms containing x to the left, all other terms to the right
0.3x=0.81
x=0.81/0.3
x=2+0.21/0.3
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