3(2x-3)-4x=21

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Solution for 3(2x-3)-4x=21 equation:



3(2x-3)-4x=21
We move all terms to the left:
3(2x-3)-4x-(21)=0
We add all the numbers together, and all the variables
-4x+3(2x-3)-21=0
We multiply parentheses
-4x+6x-9-21=0
We add all the numbers together, and all the variables
2x-30=0
We move all terms containing x to the left, all other terms to the right
2x=30
x=30/2
x=15

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