Add 45/30 and 7/72
1st number: 1 15/30, 2nd number: 7/72
45/30 + 7/72 is 115/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
45/30 = 45 × 12/30 × 12 = 540/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
7/72 = 7 × 5/72 × 5 = 35/360 - Add the two like fractions:
540/360 + 35/360 = 540 + 35/360 = 575/360 - 575/360 simplified gives 115/72
- So, 45/30 + 7/72 = 115/72
In mixed form: 143/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+7/72 45/30+14/72 45/60+7/72 45/30+21/72 45/90+7/72 45/30+35/72 45/30+49/72