1.2x+2.1-3.9x=2.2(x+1)-0.8

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Solution for 1.2x+2.1-3.9x=2.2(x+1)-0.8 equation: 



1.2x+2.1-3.9x=2.2(x+1)-0.8

We move all terms to the left:

1.2x+2.1-3.9x-(2.2(x+1)-0.8)=0

We add all the numbers together, and all the variables

-2.7x-(2.2(x+1)-0.8)+2.1=0



We calculate terms in parentheses: -(2.2(x+1)-0.8), so:

2.2(x+1)-0.8

We multiply parentheses

2.2x+2.2-0.8

We add all the numbers together, and all the variables

2.2x+1.4

Back to the equation:

-(2.2x+1.4)



We get rid of parentheses

-2.7x-2.2x-1.4+2.1=0

We add all the numbers together, and all the variables

-4.9x+0.7=0

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

-4.9x=-0.7

x=-0.7/-4.9

x=0.7/4.9

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