Add 72/10 and 1/45
1st number: 7 2/10, 2nd number: 1/45
72/10 + 1/45 is 65/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 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 45 × 2 = 90,
1/45 = 1 × 2/45 × 2 = 2/90 - Add the two like fractions:
648/90 + 2/90 = 648 + 2/90 = 650/90 - 650/90 simplified gives 65/9
- So, 72/10 + 1/45 = 65/9
In mixed form: 72/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10+2/45 72/20+1/45 72/10+1/90 72/10+3/45 72/30+1/45 72/10+5/45 72/50+1/45 72/10+7/45 72/70+1/45