Add 45/14 and 72/30
1st number: 3 3/14, 2nd number: 2 12/30
45/14 + 72/30 is 393/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
45/14 = 45 × 15/14 × 15 = 675/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
72/30 = 72 × 7/30 × 7 = 504/210 - Add the two like fractions:
675/210 + 504/210 = 675 + 504/210 = 1179/210 - 1179/210 simplified gives 393/70
- So, 45/14 + 72/30 = 393/70
In mixed form: 543/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/14+72/30 45/28+72/30 45/14+72/60 45/42+72/30 45/14+72/90 45/70+72/30 45/98+72/30