Add 45/72 and 30/7
1st number: 45/72, 2nd number: 4 2/7
45/72 + 30/7 is 275/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
45/72 = 45 × 7/72 × 7 = 315/504 - Likewise, for the 2nd fraction, since 7 × 72 = 504,
30/7 = 30 × 72/7 × 72 = 2160/504 - Add the two like fractions:
315/504 + 2160/504 = 315 + 2160/504 = 2475/504 - 2475/504 simplified gives 275/56
- So, 45/72 + 30/7 = 275/56
In mixed form: 451/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+30/7 45/72+60/7 45/72+30/14 45/72+90/7 45/72+30/21 45/72+30/35 45/72+30/49