-3u=-8u+40

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Solution for -3u=-8u+40 equation: 



-3u=-8u+40

We move all terms to the left:

-3u-(-8u+40)=0

We get rid of parentheses

-3u+8u-40=0

We add all the numbers together, and all the variables

5u-40=0

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

5u=40

u=40/5

u=8

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