3x+2.5=12x-7.2

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Solution for 3x+2.5=12x-7.2 equation: 



3x+2.5=12x-7.2

We move all terms to the left:

3x+2.5-(12x-7.2)=0

We get rid of parentheses

3x-12x+7.2+2.5=0

We add all the numbers together, and all the variables

-9x+9.7=0

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

-9x=-9.7

x=-9.7/-9

x=1+0.7/9

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