R=140-0,4x

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Solution for R=140-0,4x equation: 



=140-0.4R

We move all terms to the left:

-(140-0.4R)=0

We add all the numbers together, and all the variables

-(-0.4R+140)=0

We get rid of parentheses

0.4R-140=0

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

0.4R=140

R=140/0.4

R=350

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