20=4(u+7)-6u

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Solution for 20=4(u+7)-6u equation: 



20=4(u+7)-6u

We move all terms to the left:

20-(4(u+7)-6u)=0



We calculate terms in parentheses: -(4(u+7)-6u), so:

4(u+7)-6u

We add all the numbers together, and all the variables

-6u+4(u+7)

We multiply parentheses

-6u+4u+28

We add all the numbers together, and all the variables

-2u+28

Back to the equation:

-(-2u+28)



We get rid of parentheses

2u-28+20=0

We add all the numbers together, and all the variables

2u-8=0

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

2u=8

u=8/2

u=4

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