0.4x+0.7=0.9x-0.8

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Solution for 0.4x+0.7=0.9x-0.8 equation: 



0.4x+0.7=0.9x-0.8

We move all terms to the left:

0.4x+0.7-(0.9x-0.8)=0

We get rid of parentheses

0.4x-0.9x+0.8+0.7=0

We add all the numbers together, and all the variables

-0.5x+1.5=0

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

-0.5x=-1.5

x=-1.5/-0.5

x=+3

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