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0.3x-0.7=0.4
We move all terms to the left:
0.3x-0.7-(0.4)=0
We add all the numbers together, and all the variables
0.3x-1.1=0
We move all terms containing x to the left, all other terms to the right
0.3x=1.1
x=1.1/0.3
x=3+0.2/0.3
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