Add 72/70 and 9/30
1st number: 1 2/70, 2nd number: 9/30
72/70 + 9/30 is 93/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
72/70 = 72 × 3/70 × 3 = 216/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
9/30 = 9 × 7/30 × 7 = 63/210 - Add the two like fractions:
216/210 + 63/210 = 216 + 63/210 = 279/210 - 279/210 simplified gives 93/70
- So, 72/70 + 9/30 = 93/70
In mixed form: 123/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70+18/30 72/70+9/60 72/70+27/30 72/70+9/90 72/70+45/30 72/70+63/30