Add 48/60 and 75/21
1st number: 48/60, 2nd number: 3 12/21
48/60 + 75/21 is 153/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
48/60 = 48 × 7/60 × 7 = 336/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
75/21 = 75 × 20/21 × 20 = 1500/420 - Add the two like fractions:
336/420 + 1500/420 = 336 + 1500/420 = 1836/420 - 1836/420 simplified gives 153/35
- So, 48/60 + 75/21 = 153/35
In mixed form: 413/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/60+75/21 48/60+75/42 48/60+75/63