-15u+7u+-2u+6u=-8

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Solution for -15u+7u+-2u+6u=-8 equation: 



-15u+7u+-2u+6u=-8

We move all terms to the left:

-15u+7u+-2u+6u-(-8)=0

We add all the numbers together, and all the variables

-4u+8=0

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

-4u=-8

u=-8/-4

u=+2

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