Question

Find the unknown number, when one-third of the number is added to 9 the sum
becomes 19​

Answer 1

$9 + \frac{1}{3} x = 19 \\ \frac{27 + x}{3} = 19 \\ 27 + x = 19 \times 3 \\ x = 57 - 27 \\ x = 30$

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Answer 2

Answer:

x=30

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