u-10+u-19=u+21

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Solution for u-10+u-19=u+21 equation: 



u-10+u-19=u+21

We move all terms to the left:

u-10+u-19-(u+21)=0

We add all the numbers together, and all the variables

2u-(u+21)-29=0

We get rid of parentheses

2u-u-21-29=0

We add all the numbers together, and all the variables

u-50=0

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

u=50

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