0.40x+1.40(100-x)=85

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Solution for 0.40x+1.40(100-x)=85 equation: 



0.40x+1.40(100-x)=85

We move all terms to the left:

0.40x+1.40(100-x)-(85)=0

We add all the numbers together, and all the variables

0.40x+1.40(-1x+100)-85=0

We multiply parentheses

0.40x-1.4x+140-85=0

We add all the numbers together, and all the variables

-1x+55=0

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

-x=-55

x=-55/-1

x=+55

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