Add 72/8 and 30/18
1st number: 9 0/8, 2nd number: 1 12/18
72/8 + 30/18 is 32/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
72/8 = 72 × 9/8 × 9 = 648/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
30/18 = 30 × 4/18 × 4 = 120/72 - Add the two like fractions:
648/72 + 120/72 = 648 + 120/72 = 768/72 - 768/72 simplified gives 32/3
- So, 72/8 + 30/18 = 32/3
In mixed form: 102/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/8+60/18 72/16+30/18 72/8+30/36 72/8+90/18 72/24+30/18 72/8+30/54 72/40+30/18 72/8+30/90 72/56+30/18