Add 18/64 and 21/56
18/64 + 21/56 is 21/32.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 56 is 448
Next, find the equivalent fraction of both fractional numbers with denominator 448 - For the 1st fraction, since 64 × 7 = 448,
18/64 = 18 × 7/64 × 7 = 126/448 - Likewise, for the 2nd fraction, since 56 × 8 = 448,
21/56 = 21 × 8/56 × 8 = 168/448 - Add the two like fractions:
126/448 + 168/448 = 126 + 168/448 = 294/448 - 294/448 simplified gives 21/32
- So, 18/64 + 21/56 = 21/32
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/64+21/56 18/64+42/56 54/64+21/56 18/64+63/56 90/64+21/56