-4-5u=-7u

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Solution for -4-5u=-7u equation: 



-4-5u=-7u

We move all terms to the left:

-4-5u-(-7u)=0

We get rid of parentheses

-5u+7u-4=0

We add all the numbers together, and all the variables

2u-4=0

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

2u=4

u=4/2

u=2

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