Quantitative problem solving1 of 3
What is 3/4 + 5/6?
The answer
Answer: A. Fractions need a common denominator before they are added. The least common denominator of 4 and 6 is 12, so 3/4 becomes 9/12 and 5/6 becomes 10/12. Adding gives 19/12, which is 19/12 as an improper fraction or 1 7/12. Adding the numerators and the denominators separately, as in 8/10, is the usual mistake.
Source: GED Math — Quantitative: adding fractions