189=20-u

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Solution for 189=20-u equation:



189=20-u
We move all terms to the left:
189-(20-u)=0
We add all the numbers together, and all the variables
-(-1u+20)+189=0
We get rid of parentheses
1u-20+189=0
We add all the numbers together, and all the variables
u+169=0
We move all terms containing u to the left, all other terms to the right
u=-169

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