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If a number is added to the numerator of 7/9 and the same number is subtracted from the denominator, the result is 3. Find the number.

If a number is added to the numerator of 7/9 and the same number is subtracted from the denominator, the result is 3. Find the number.
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4 votes
If a number is added to the numerator of 7/9 and the same number is subtracted from the denominator, the result is 3. Find the number.

User Hugo Leao
by
8.1k points

1 Answer

3 votes

Answer:

5

Explanation:


(7+x)/(9-x)=3\\ 7+x = 3(9-x)\\7+x=27-3x\\x+3x=27-7\\4x=20\\x=5

User Omidh
by
8.4k points
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