4x-4=9x+21

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Solution for 4x-4=9x+21 equation:



4x-4=9x+21
We move all terms to the left:
4x-4-(9x+21)=0
We get rid of parentheses
4x-9x-21-4=0
We add all the numbers together, and all the variables
-5x-25=0
We move all terms containing x to the left, all other terms to the right
-5x=25
x=25/-5
x=-5

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