Add 30/70 and 21/32
30/70 + 21/32 is 243/224.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 32 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 70 × 16 = 1120,
30/70 = 30 × 16/70 × 16 = 480/1120 - Likewise, for the 2nd fraction, since 32 × 35 = 1120,
21/32 = 21 × 35/32 × 35 = 735/1120 - Add the two like fractions:
480/1120 + 735/1120 = 480 + 735/1120 = 1215/1120 - 1215/1120 simplified gives 243/224
- So, 30/70 + 21/32 = 243/224
In mixed form: 119/224
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70+21/32 30/70+42/32 30/70+21/64 90/70+21/32 30/70+63/32 30/70+21/96