-20=2(u-7)-8u

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Solution for -20=2(u-7)-8u equation: 



-20=2(u-7)-8u

We move all terms to the left:

-20-(2(u-7)-8u)=0



We calculate terms in parentheses: -(2(u-7)-8u), so:

2(u-7)-8u

We add all the numbers together, and all the variables

-8u+2(u-7)

We multiply parentheses

-8u+2u-14

We add all the numbers together, and all the variables

-6u-14

Back to the equation:

-(-6u-14)



We get rid of parentheses

6u+14-20=0

We add all the numbers together, and all the variables

6u-6=0

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

6u=6

u=6/6

u=1

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