Add 30/48 and 70/45
1st number: 30/48, 2nd number: 1 25/45
30/48 + 70/45 is 157/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
30/48 = 30 × 15/48 × 15 = 450/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
70/45 = 70 × 16/45 × 16 = 1120/720 - Add the two like fractions:
450/720 + 1120/720 = 450 + 1120/720 = 1570/720 - 1570/720 simplified gives 157/72
- So, 30/48 + 70/45 = 157/72
In mixed form: 213/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/48+70/45 30/96+70/45 30/48+70/90 90/48+70/45