30=3(u+5)-8u

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Solution for 30=3(u+5)-8u equation: 



30=3(u+5)-8u

We move all terms to the left:

30-(3(u+5)-8u)=0



We calculate terms in parentheses: -(3(u+5)-8u), so:

3(u+5)-8u

We add all the numbers together, and all the variables

-8u+3(u+5)

We multiply parentheses

-8u+3u+15

We add all the numbers together, and all the variables

-5u+15

Back to the equation:

-(-5u+15)



We get rid of parentheses

5u-15+30=0

We add all the numbers together, and all the variables

5u+15=0

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

5u=-15

u=-15/5

u=-3

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