80+0.70x=40+0.90x

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Solution for 80+0.70x=40+0.90x equation: 



80+0.70x=40+0.90x

We move all terms to the left:

80+0.70x-(40+0.90x)=0

We add all the numbers together, and all the variables

0.70x-(0.90x+40)+80=0

We get rid of parentheses

0.70x-0.90x-40+80=0

We add all the numbers together, and all the variables

-0.2x+40=0

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

-0.2x=-40

x=-40/-0.2

x=+200

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