3x+12=4.2x+6

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Solution for 3x+12=4.2x+6 equation: 



3x+12=4.2x+6

We move all terms to the left:

3x+12-(4.2x+6)=0

We get rid of parentheses

3x-4.2x-6+12=0

We add all the numbers together, and all the variables

-1.2x+6=0

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

-1.2x=-6

x=-6/-1.2

x=+5

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