7(x+2)-3(2x+1)=21

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Solution for 7(x+2)-3(2x+1)=21 equation: 



7(x+2)-3(2x+1)=21

We move all terms to the left:

7(x+2)-3(2x+1)-(21)=0

We multiply parentheses

7x-6x+14-3-21=0

We add all the numbers together, and all the variables

x-10=0

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

x=10

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