Answer:
Cross-multiply the two fractions and add the results together to get the numerator of the answer.
Suppose you want to add the fractions 1/3 and 2/5. To get the numerator of the answer, cross-multiply. In other words, multiply the numerator of each fraction by the denominator of the other:
1/3 and 2/5
5+1=6 3+2=5
Add the results to get the numerator (top) of the answer:
5 + 6 = 11
Multiply the two denominators together to get the denominator of the answer.
To get the denominator (bottom), just multiply the denominators of the two fractions:
1/3 and 2/5
3x5 = 15
The denominator of the answer is 15.
So the final answer is 11/15
HOPE THIS HELPS!