2u+9=13

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Solution for 2u+9=13 equation: 



2u+9=13

We move all terms to the left:

2u+9-(13)=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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