3(2x+1)=8x+21=

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Solution for 3(2x+1)=8x+21= equation: 



3(2x+1)=8x+21=

We move all terms to the left:

3(2x+1)-(8x+21)=0

We multiply parentheses

6x-(8x+21)+3=0

We get rid of parentheses

6x-8x-21+3=0

We add all the numbers together, and all the variables

-2x-18=0

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

-2x=18

x=18/-2

x=-9

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