Add 72/10 and 12/18
1st number: 7 2/10, 2nd number: 12/18
72/10 + 12/18 is 118/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
72/10 = 72 × 9/10 × 9 = 648/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
12/18 = 12 × 5/18 × 5 = 60/90 - Add the two like fractions:
648/90 + 60/90 = 648 + 60/90 = 708/90 - 708/90 simplified gives 118/15
- So, 72/10 + 12/18 = 118/15
In mixed form: 713/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10+24/18 72/20+12/18 72/10+12/36 72/10+36/18 72/30+12/18 72/10+12/54 72/10+60/18 72/50+12/18 72/10+12/90 72/10+84/18 72/70+12/18