Add 21/16 and 54/70
1st number: 1 5/16, 2nd number: 54/70
21/16 + 54/70 is 1167/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 16 × 35 = 560,
21/16 = 21 × 35/16 × 35 = 735/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
54/70 = 54 × 8/70 × 8 = 432/560 - Add the two like fractions:
735/560 + 432/560 = 735 + 432/560 = 1167/560 - So, 21/16 + 54/70 = 1167/560
In mixed form: 247/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/16+54/70 21/32+54/70 63/16+54/70 21/48+54/70 21/80+54/70