1.2x+0.8=0.4x=1.5

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Solution for 1.2x+0.8=0.4x=1.5 equation: 



1.2x+0.8=0.4x=1.5

We move all terms to the left:

1.2x+0.8-(0.4x)=0

We add all the numbers together, and all the variables

1.2x-(+0.4x)+0.8=0

We get rid of parentheses

1.2x-0.4x+0.8=0

We add all the numbers together, and all the variables

0.8x+0.8=0

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

0.8x=-0.8

x=-0.8/0.8

x=-1

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