0.7x+1.2=0.3x+2.8

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Solution for 0.7x+1.2=0.3x+2.8 equation: 



0.7x+1.2=0.3x+2.8

We move all terms to the left:

0.7x+1.2-(0.3x+2.8)=0

We get rid of parentheses

0.7x-0.3x-2.8+1.2=0

We add all the numbers together, and all the variables

0.4x-1.6=0

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

0.4x=1.6

x=1.6/0.4

x=4

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