Add 48/18 and 4/21
1st number: 2 12/18, 2nd number: 4/21
48/18 + 4/21 is 20/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
48/18 = 48 × 7/18 × 7 = 336/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
4/21 = 4 × 6/21 × 6 = 24/126 - Add the two like fractions:
336/126 + 24/126 = 336 + 24/126 = 360/126 - 360/126 simplified gives 20/7
- So, 48/18 + 4/21 = 20/7
In mixed form: 26/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/18+4/21 48/18+8/21 48/36+4/21 48/18+4/42 48/18+12/21 48/54+4/21 48/18+4/63 48/18+20/21 48/90+4/21 48/18+28/21