5x+30=8x+21

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Solution for 5x+30=8x+21 equation: 



5x+30=8x+21

We move all terms to the left:

5x+30-(8x+21)=0

We get rid of parentheses

5x-8x-21+30=0

We add all the numbers together, and all the variables

-3x+9=0

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

-3x=-9

x=-9/-3

x=+3

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