-13+1+4u-1=8u+7

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Solution for -13+1+4u-1=8u+7 equation: 



-13+1+4u-1=8u+7

We move all terms to the left:

-13+1+4u-1-(8u+7)=0

We add all the numbers together, and all the variables

4u-(8u+7)-13=0

We get rid of parentheses

4u-8u-7-13=0

We add all the numbers together, and all the variables

-4u-20=0

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

-4u=20

u=20/-4

u=-5

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