Add 30/40 and 72/48
1st number: 30/40, 2nd number: 1 24/48
30/40 + 72/48 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 40 × 6 = 240,
30/40 = 30 × 6/40 × 6 = 180/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
72/48 = 72 × 5/48 × 5 = 360/240 - Add the two like fractions:
180/240 + 360/240 = 180 + 360/240 = 540/240 - 540/240 simplified gives 9/4
- So, 30/40 + 72/48 = 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: 60/40+72/48 30/80+72/48 30/40+72/96 90/40+72/48