0.4x-2.1=1.2x+1.9

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Solution for 0.4x-2.1=1.2x+1.9 equation: 



0.4x-2.1=1.2x+1.9

We move all terms to the left:

0.4x-2.1-(1.2x+1.9)=0

We get rid of parentheses

0.4x-1.2x-1.9-2.1=0

We add all the numbers together, and all the variables

-0.8x-4=0

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

-0.8x=4

x=4/-0.8

x=-5

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