6+7u=-15+14u

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Solution for 6+7u=-15+14u equation: 



6+7u=-15+14u

We move all terms to the left:

6+7u-(-15+14u)=0

We add all the numbers together, and all the variables

7u-(14u-15)+6=0

We get rid of parentheses

7u-14u+15+6=0

We add all the numbers together, and all the variables

-7u+21=0

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

-7u=-21

u=-21/-7

u=+3

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