Add 21/24 and 5/70
21/24 + 5/70 is 53/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 70 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 24 × 35 = 840,
21/24 = 21 × 35/24 × 35 = 735/840 - Likewise, for the 2nd fraction, since 70 × 12 = 840,
5/70 = 5 × 12/70 × 12 = 60/840 - Add the two like fractions:
735/840 + 60/840 = 735 + 60/840 = 795/840 - 795/840 simplified gives 53/56
- So, 21/24 + 5/70 = 53/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24+5/70 21/24+10/70 21/48+5/70 63/24+5/70 21/24+15/70 21/72+5/70 21/24+25/70 21/24+35/70