8x+21=5x+18

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Solution for 8x+21=5x+18 equation: 



8x+21=5x+18

We move all terms to the left:

8x+21-(5x+18)=0

We get rid of parentheses

8x-5x-18+21=0

We add all the numbers together, and all the variables

3x+3=0

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

3x=-3

x=-3/3

x=-1

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