4(2x+3)+1=21

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Solution for 4(2x+3)+1=21 equation: 



4(2x+3)+1=21

We move all terms to the left:

4(2x+3)+1-(21)=0

We add all the numbers together, and all the variables

4(2x+3)-20=0

We multiply parentheses

8x+12-20=0

We add all the numbers together, and all the variables

8x-8=0

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

8x=8

x=8/8

x=1

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