the numerator of a fraction is 4 less than the denominator. if one is added to both it's numerator and denominator, the fraction becomes 1/2. find the fraction
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Answer:
let denominator be =x
x-4/x is the fraction
x-4+1/x+1=1/2
x-3/x+1=1/2
cross multiply;
2(x-3)=x+1
2x-6=x+1
2x-x=1+6
x=7
the fraction before adding 1 was = 3/7
and after adding one is = 4/8 which is 1/2
Step-by-step explanation:
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