8x+3=2x+21=

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Solution for 8x+3=2x+21= equation: 



8x+3=2x+21=

We move all terms to the left:

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

We get rid of parentheses

8x-2x-21+3=0

We add all the numbers together, and all the variables

6x-18=0

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

6x=18

x=18/6

x=3

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