Add 25/64 and 21/70
25/64 + 21/70 is 221/320.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 70 is 2240
Next, find the equivalent fraction of both fractional numbers with denominator 2240 - For the 1st fraction, since 64 × 35 = 2240,
25/64 = 25 × 35/64 × 35 = 875/2240 - Likewise, for the 2nd fraction, since 70 × 32 = 2240,
21/70 = 21 × 32/70 × 32 = 672/2240 - Add the two like fractions:
875/2240 + 672/2240 = 875 + 672/2240 = 1547/2240 - 1547/2240 simplified gives 221/320
- So, 25/64 + 21/70 = 221/320
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/64+21/70 25/64+42/70 75/64+21/70 25/64+63/70