5x-21-x=x-18

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Solution for 5x-21-x=x-18 equation:



5x-21-x=x-18
We move all terms to the left:
5x-21-x-(x-18)=0
We add all the numbers together, and all the variables
4x-(x-18)-21=0
We get rid of parentheses
4x-x+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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