Add 21/56 and 70/7
1st number: 21/56, 2nd number: 10 0/7
21/56 + 70/7 is 83/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
21/56 = 21 × 1/56 × 1 = 21/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
70/7 = 70 × 8/7 × 8 = 560/56 - Add the two like fractions:
21/56 + 560/56 = 21 + 560/56 = 581/56 - 581/56 simplified gives 83/8
- So, 21/56 + 70/7 = 83/8
In mixed form: 103/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56+70/7 21/56+70/14 63/56+70/7 21/56+70/21 21/56+70/35 21/56+70/49