Add 70/30 and 32/21
1st number: 2 10/30, 2nd number: 1 11/21
70/30 + 32/21 is 27/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
70/30 = 70 × 7/30 × 7 = 490/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
32/21 = 32 × 10/21 × 10 = 320/210 - Add the two like fractions:
490/210 + 320/210 = 490 + 320/210 = 810/210 - 810/210 simplified gives 27/7
- So, 70/30 + 32/21 = 27/7
In mixed form: 36/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30+64/21 70/60+32/21 70/30+32/42 70/30+96/21 70/90+32/21 70/30+32/63