21x-4=3x-9

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Solution for 21x-4=3x-9 equation: 



21x-4=3x-9

We move all terms to the left:

21x-4-(3x-9)=0

We get rid of parentheses

21x-3x+9-4=0

We add all the numbers together, and all the variables

18x+5=0

We move all terms containing x to the left, all other terms to the right

18x=-5

x=-5/18

x=-5/18

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