0.3x/3-2.1/3=0.4

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Solution for 0.3x/3-2.1/3=0.4 equation: 



0.3x/3-2.1/3=0.4

We move all terms to the left:

0.3x/3-2.1/3-(0.4)=0

We add all the numbers together, and all the variables

0.3x/3-0.4-2.1/3=0

We multiply all the terms by the denominator


0.3x-2.1-(0.4)*3=0

We add all the numbers together, and all the variables

0.3x-3.3=0

We move all terms containing x to the left, all other terms to the right

0.3x=3.3

x=3.3/0.3

x=11

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