20+2u=4

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Solution for 20+2u=4 equation: 



20+2u=4

We move all terms to the left:

20+2u-(4)=0

We add all the numbers together, and all the variables

2u+16=0

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

2u=-16

u=-16/2

u=-8

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