Add 72/45 and 12/8
1st number: 1 27/45, 2nd number: 1 4/8
72/45 + 12/8 is 31/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
72/45 = 72 × 8/45 × 8 = 576/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
12/8 = 12 × 45/8 × 45 = 540/360 - Add the two like fractions:
576/360 + 540/360 = 576 + 540/360 = 1116/360 - 1116/360 simplified gives 31/10
- So, 72/45 + 12/8 = 31/10
In mixed form: 31/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/45+24/8 72/90+12/8 72/45+12/16 72/45+36/8 72/45+12/24 72/45+60/8 72/45+12/40 72/45+84/8 72/45+12/56