Add 72/10 and 4/18
1st number: 7 2/10, 2nd number: 4/18
72/10 + 4/18 is 334/45.
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,
4/18 = 4 × 5/18 × 5 = 20/90 - Add the two like fractions:
648/90 + 20/90 = 648 + 20/90 = 668/90 - 668/90 simplified gives 334/45
- So, 72/10 + 4/18 = 334/45
In mixed form: 719/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10+8/18 72/20+4/18 72/10+4/36 72/10+12/18 72/30+4/18 72/10+4/54 72/10+20/18 72/50+4/18 72/10+4/90 72/10+28/18 72/70+4/18