.3x-4.2=0.2x-8

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Solution for .3x-4.2=0.2x-8 equation: 



.3x-4.2=0.2x-8

We move all terms to the left:

.3x-4.2-(0.2x-8)=0

We get rid of parentheses

.3x-0.2x+8-4.2=0

We add all the numbers together, and all the variables

0.1x+3.8=0

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

0.1x=-3.8

x=-3.8/0.1

x=-37+0.1/0.1

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