the denominator of a fraction exceeds the numerator by 4 and if 5 was taken away from each the sum of the reciprocal of the new fraction and four times the original fraction is 5 find the original
mayankahlawat:
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Answer:3/4
Step-by-step explanation:
original fraction ---- x/(x+1)
new fraction = (x-2)/(x-1)
(x-1)/(x-2) + 4x/(x+1) = 5
times (x-2)(x+1), the LCD
(x-1)(x+1) + 4x(x-2) = 5(x-2)(x+1)
x^2 - 1 + 4x^2 - 8x = 5x^2 - 5x - 10
3x - 9 = 0
x = 3
original fraction is 3/4
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The original fraction is 3/4
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