Add 70/15 and 81/24, Solve 4 10/15 + 3 9/24 as a fraction

Add 70/15 and 81/24

1^st number: 4 10/15, 2^nd number: 3 9/24

70/15 + 81/24 is 193/24.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 24 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 15 × 8 = 120,
70/15 = 70 × 8/15 × 8 = 560/120
Likewise, for the 2nd fraction, since 24 × 5 = 120,
81/24 = 81 × 5/24 × 5 = 405/120
Add the two like fractions:
560/120 + 405/120 = 560 + 405/120 = 965/120
965/120 simplified gives 193/24
So, 70/15 + 81/24 = 193/24
In mixed form: 81/24

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad