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134=19-u
We move all terms to the left:
134-(19-u)=0
We add all the numbers together, and all the variables
-(-1u+19)+134=0
We get rid of parentheses
1u-19+134=0
We add all the numbers together, and all the variables
u+115=0
We move all terms containing u to the left, all other terms to the right
u=-115
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