42=-u+189

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Solution for 42=-u+189 equation: 



42=-u+189

We move all terms to the left:

42-(-u+189)=0

We add all the numbers together, and all the variables

-(-1u+189)+42=0

We get rid of parentheses

1u-189+42=0

We add all the numbers together, and all the variables

u-147=0

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

u=147

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