Add 84/16 and 21/56
1st number: 5 4/16, 2nd number: 21/56
84/16 + 21/56 is 45/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 56 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 16 × 7 = 112,
84/16 = 84 × 7/16 × 7 = 588/112 - Likewise, for the 2nd fraction, since 56 × 2 = 112,
21/56 = 21 × 2/56 × 2 = 42/112 - Add the two like fractions:
588/112 + 42/112 = 588 + 42/112 = 630/112 - 630/112 simplified gives 45/8
- So, 84/16 + 21/56 = 45/8
In mixed form: 55/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16+42/56 84/32+21/56 84/16+63/56 84/48+21/56 84/80+21/56