Add 30/80 and 45/24
1st number: 30/80, 2nd number: 1 21/24
30/80 + 45/24 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 24 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
30/80 = 30 × 3/80 × 3 = 90/240 - Likewise, for the 2nd fraction, since 24 × 10 = 240,
45/24 = 45 × 10/24 × 10 = 450/240 - Add the two like fractions:
90/240 + 450/240 = 90 + 450/240 = 540/240 - 540/240 simplified gives 9/4
- So, 30/80 + 45/24 = 9/4
In mixed form: 21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80+45/24 30/80+90/24 30/80+45/48 90/80+45/24 30/80+45/72