One-third

A one-third of unknown number is equal to five times as great as the difference of the same unknown number and number 28.
Determine the unknown number.

Correct answer:

x =  30

Step-by-step explanation:


x/3=5(x-28)

x/3=5•(x-28)

14x = 420

x = 30

Our simple equation calculator calculates it.



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