6x-21=4x-21

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Solution for 6x-21=4x-21 equation:



6x-21=4x-21
We move all terms to the left:
6x-21-(4x-21)=0
We get rid of parentheses
6x-4x+21-21=0
We add all the numbers together, and all the variables
2x=0
x=0/2
x=0

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