54+9x=21

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Solution for 54+9x=21 equation: 



54+9x=21

We move all terms to the left:

54+9x-(21)=0

We add all the numbers together, and all the variables

9x+33=0

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

9x=-33

x=-33/9

x=-3+2/3

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