Add 21/48 and 21/70
21/48 + 21/70 is 59/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 70 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 48 × 35 = 1680,
21/48 = 21 × 35/48 × 35 = 735/1680 - Likewise, for the 2nd fraction, since 70 × 24 = 1680,
21/70 = 21 × 24/70 × 24 = 504/1680 - Add the two like fractions:
735/1680 + 504/1680 = 735 + 504/1680 = 1239/1680 - 1239/1680 simplified gives 59/80
- So, 21/48 + 21/70 = 59/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/48+21/70 21/48+42/70 21/96+21/70 63/48+21/70 21/48+63/70