1.

the denominator of rational no is greater than its numerator by 7. if the mumerator is increased by 17 and the deniminator decreased by 6 ,the new no becomes 2. find the original number​

Answer»

LET the numerator be 'X'

Thus, denominator = (x + 7)

Thus, fraction = x/(x+7)

According to the question,

NEW Numerator = x + 17

New denominator = x + 7 - 6 = x + 1

New Fraction = 2

=> (x+17)/(x+1) = 2

On cross-multiplying we get,

x + 17 = 2(x+1)

=> x + 17 = 2x + 2

=> 2x - x = 17 - 2

=> x = 15

Thus original numerator = 15 and

original denominator = 15 + 7 = 22

Thus, original fraction = 15/22



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