2(5u+2)=-21

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Solution for 2(5u+2)=-21 equation: 



2(5u+2)=-21

We move all terms to the left:

2(5u+2)-(-21)=0

We add all the numbers together, and all the variables

2(5u+2)+21=0

We multiply parentheses

10u+4+21=0

We add all the numbers together, and all the variables

10u+25=0

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

10u=-25

u=-25/10

u=-2+1/2

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