1.4=8.9-3u

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Solution for 1.4=8.9-3u equation: 



1.4=8.9-3u

We move all terms to the left:

1.4-(8.9-3u)=0

We add all the numbers together, and all the variables

-(-3u+8.9)+1.4=0

We get rid of parentheses

3u-8.9+1.4=0

We add all the numbers together, and all the variables

3u-7.5=0

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

3u=7.5

u=7.5/3

u=2+1/2

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