The denominator of a rational number is greater than its numerator by 8 if the number is increased by 17 and the denominator is decreased by 1 the number obtained is 3 upon 2 find the rational number
ankitaa0223:
this is a q from ncert 8th class am i right
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Answered by
12
Let the numerator be x.
Then the denominator be x + 8.
Fraction = x/x + 8. ----- (1)
Given that x + 17/x+ 8 -1 = 3/2
x + 17/x + 7 = 3/2
2x + 34 = 3x + 21
x = 13.
Substitute in (1), we get
Fraction = 13/21.
Hope this helps!
Then the denominator be x + 8.
Fraction = x/x + 8. ----- (1)
Given that x + 17/x+ 8 -1 = 3/2
x + 17/x + 7 = 3/2
2x + 34 = 3x + 21
x = 13.
Substitute in (1), we get
Fraction = 13/21.
Hope this helps!
Answered by
5
let the equation be like
x/x+8
x+17/x+8-1=3/2
x+17/x+7=3/2
2(x+17)=3(x+7)
2x+34=3x+21
2x-3x=21-34
-x=-13
x=13
n=13
d=13+8=21
13/21 is the ans
hope u got it
thanks
@Ankitaa0223
x/x+8
x+17/x+8-1=3/2
x+17/x+7=3/2
2(x+17)=3(x+7)
2x+34=3x+21
2x-3x=21-34
-x=-13
x=13
n=13
d=13+8=21
13/21 is the ans
hope u got it
thanks
@Ankitaa0223
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