3x-21=7x-14

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Solution for 3x-21=7x-14 equation:



3x-21=7x-14
We move all terms to the left:
3x-21-(7x-14)=0
We get rid of parentheses
3x-7x+14-21=0
We add all the numbers together, and all the variables
-4x-7=0
We move all terms containing x to the left, all other terms to the right
-4x=7
x=7/-4
x=-1+3/4

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