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Nutka1998 [239]
2 years ago
11

The numerator of fraction is 1 less then its denominator if the numerator is increased by 5 the new fraction becomes equivalent

to 4/5 what is the original factor?
Mathematics
1 answer:
jek_recluse [69]2 years ago
8 0

Answer:

4/5

Step-by-step explanation:

the numerator of fraction is 1 less than its denominator. If the numerator is increased by 4 and the denominator is increased by 5, the new fraction becomes equivalent to 4/5. what is the original fraction?

Let n = numerator

d = denominator

n = d - 1

\frac{d - 1}{d}

\frac{d - 1 + 4}{d + 5} = \frac{4}{5}

\frac{d + 3}{d+ 5} = \frac{4}{5}

cross multiply

5(d + 3) = 4(d + 5)

5d + 15 = 4d + 20

d = 5

n = d - 1

5 - 1 = 4

original fraction 4/5

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