9x+21=75

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Solution for 9x+21=75 equation: 



9x+21=75

We move all terms to the left:

9x+21-(75)=0

We add all the numbers together, and all the variables

9x-54=0

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

9x=54

x=54/9

x=6

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