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.3x-2.1/3=0.4
We move all terms to the left:
.3x-2.1/3-(0.4)=0
We add all the numbers together, and all the variables
.3x-0.4-2.1/3=0
We multiply all the terms by the denominator
(.3x)*3-2.1-(0.4)*3=0
We add all the numbers together, and all the variables
(+.3x)*3-2.1-(0.4)*3=0
We add all the numbers together, and all the variables
(+.3x)*3-3.3=0
We multiply parentheses
3x-3.3=0
We move all terms containing x to the left, all other terms to the right
3x=3.3
x=3.3/3
x=1+0.3/3
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