189=144-u

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Solution for 189=144-u equation: 



189=144-u

We move all terms to the left:

189-(144-u)=0

We add all the numbers together, and all the variables

-(-1u+144)+189=0

We get rid of parentheses

1u-144+189=0

We add all the numbers together, and all the variables

u+45=0

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

u=-45

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