A student accidentally added five to both the numerator and denominator of a fraction, changing the fraction's value to . If the original numerator was a 2, what was the original denominator?

tertre Sep 10, 2016

#2**0 **

sorry this is good A student accidentally added five to both the numerator and denominator of a fraction, changing the fraction's value to 1/2 . If the original numerator was a 2, what was the original denominator?

tertre Sep 10, 2016

#3**0 **

sorry this is good A student accidentally added five to both the numerator and denominator of a fraction, changing the fraction's value to 1/2 . If the original numerator was a 2, what was the original denominator?\

did u get the answer

tertre Sep 10, 2016

#4**+5 **

If the original numerator was 2 and 5 was added to both sides, then that means:

2+5=7 the new numerator. But, after adding 5 to both sides it changed the value of the fraction to 1/2. This means that if numerator was 7, then the denominator would have to be 14, or 7/14 =1/2. Therefore, the original denominator would have to be: 14 - 5 =9. So, the original fraction was:

2/9. So that: [2 + 5] / [9 + 5] =7/14 =1/2.

Guest Sep 10, 2016