7u-18=5u+15-3

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Solution for 7u-18=5u+15-3 equation: 



7u-18=5u+15-3

We move all terms to the left:

7u-18-(5u+15-3)=0

We add all the numbers together, and all the variables

7u-(5u+12)-18=0

We get rid of parentheses

7u-5u-12-18=0

We add all the numbers together, and all the variables

2u-30=0

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

2u=30

u=30/2

u=15

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