Add 7/30 and 72/70
1st number: 7/30, 2nd number: 1 2/70
7/30 + 72/70 is 53/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
7/30 = 7 × 7/30 × 7 = 49/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
72/70 = 72 × 3/70 × 3 = 216/210 - Add the two like fractions:
49/210 + 216/210 = 49 + 216/210 = 265/210 - 265/210 simplified gives 53/42
- So, 7/30 + 72/70 = 53/42
In mixed form: 111/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+72/70 7/60+72/70 21/30+72/70 7/90+72/70 35/30+72/70 49/30+72/70