7. When 1 is added to the denominator of a fraction, the fraction becomes 1 by 5 but when 1 is subtracted from its numerator is become 1 by 7 find the fraction
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Answer:
x=7/2
y=33/2
Step-by-step explanation:
x/(y+1)=1/5
or, y+1=5x..............(1)
also, (x-1)/(y+1)=1/7
or, y+1=7x-7..................(2)
from (1) and (2)
7x-7=5x
or, 7x-5x=7
or, 2x=7
or, x=7/2
Substituting x in (1)
y+1=35/2
or, 2y+2=35
or, 2y=33
or y=33/2
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