18x-21=2x-1

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Solution for 18x-21=2x-1 equation: 



18x-21=2x-1

We move all terms to the left:

18x-21-(2x-1)=0

We get rid of parentheses

18x-2x+1-21=0

We add all the numbers together, and all the variables

16x-20=0

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

16x=20

x=20/16

x=1+1/4

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