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4u=-2+1
We move all terms to the left:
4u-(-2+1)=0
We add all the numbers together, and all the variables
4u-(-1)=0
We add all the numbers together, and all the variables
4u+1=0
We move all terms containing u to the left, all other terms to the right
4u=-1
u=-1/4
u=-1/4
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