8x+3=4x+21

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Solution for 8x+3=4x+21 equation: 



8x+3=4x+21

We move all terms to the left:

8x+3-(4x+21)=0

We get rid of parentheses

8x-4x-21+3=0

We add all the numbers together, and all the variables

4x-18=0

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

4x=18

x=18/4

x=4+1/2

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