0.4x+40=0.9x+20

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Solution for 0.4x+40=0.9x+20 equation: 



0.4x+40=0.9x+20

We move all terms to the left:

0.4x+40-(0.9x+20)=0

We get rid of parentheses

0.4x-0.9x-20+40=0

We add all the numbers together, and all the variables

-0.5x+20=0

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

-0.5x=-20

x=-20/-0.5

x=+40

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