8+4-4u=-u-3

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Solution for 8+4-4u=-u-3 equation: 



8+4-4u=-u-3

We move all terms to the left:

8+4-4u-(-u-3)=0

We add all the numbers together, and all the variables

-4u-(-1u-3)+8+4=0

We add all the numbers together, and all the variables

-4u-(-1u-3)+12=0

We get rid of parentheses

-4u+1u+3+12=0

We add all the numbers together, and all the variables

-3u+15=0

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

-3u=-15

u=-15/-3

u=+5

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