2(x+21)=100

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Solution for 2(x+21)=100 equation: 



2(x+21)=100

We move all terms to the left:

2(x+21)-(100)=0

We multiply parentheses

2x+42-100=0

We add all the numbers together, and all the variables

2x-58=0

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

2x=58

x=58/2

x=29

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