Add 70/45 and 18/48
1st number: 1 25/45, 2nd number: 18/48
70/45 + 18/48 is 139/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 48 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
70/45 = 70 × 16/45 × 16 = 1120/720 - Likewise, for the 2nd fraction, since 48 × 15 = 720,
18/48 = 18 × 15/48 × 15 = 270/720 - Add the two like fractions:
1120/720 + 270/720 = 1120 + 270/720 = 1390/720 - 1390/720 simplified gives 139/72
- So, 70/45 + 18/48 = 139/72
In mixed form: 167/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45+36/48 70/90+18/48 70/45+18/96 70/45+54/48 70/45+90/48