3x=8+2x=21

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



3x=8+2x=21

We move all terms to the left:

3x-(8+2x)=0

We add all the numbers together, and all the variables

3x-(2x+8)=0

We get rid of parentheses

3x-2x-8=0

We add all the numbers together, and all the variables

x-8=0

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

x=8

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