64=-7u+8

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Solution for 64=-7u+8 equation: 



64=-7u+8

We move all terms to the left:

64-(-7u+8)=0

We get rid of parentheses

7u-8+64=0

We add all the numbers together, and all the variables

7u+56=0

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

7u=-56

u=-56/7

u=-8

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