Add 42/98 and 21/56
42/98 + 21/56 is 45/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 56 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 98 × 4 = 392,
42/98 = 42 × 4/98 × 4 = 168/392 - Likewise, for the 2nd fraction, since 56 × 7 = 392,
21/56 = 21 × 7/56 × 7 = 147/392 - Add the two like fractions:
168/392 + 147/392 = 168 + 147/392 = 315/392 - 315/392 simplified gives 45/56
- So, 42/98 + 21/56 = 45/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/98+21/56 42/98+42/56 42/98+63/56