9u-8u+7=20-8

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Solution for 9u-8u+7=20-8 equation: 



9u-8u+7=20-8

We move all terms to the left:

9u-8u+7-(20-8)=0

We add all the numbers together, and all the variables

9u-8u+7-12=0

We add all the numbers together, and all the variables

u-5=0

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

u=5

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