Add 20/72 and 12/10
1st number: 20/72, 2nd number: 1 2/10
20/72 + 12/10 is 133/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 10 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Likewise, for the 2nd fraction, since 10 × 36 = 360,
12/10 = 12 × 36/10 × 36 = 432/360 - Add the two like fractions:
100/360 + 432/360 = 100 + 432/360 = 532/360 - 532/360 simplified gives 133/90
- So, 20/72 + 12/10 = 133/90
In mixed form: 143/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/72+12/10 20/72+24/10 20/72+12/20 60/72+12/10 20/72+36/10 20/72+12/30 20/72+60/10 20/72+12/50 20/72+84/10 20/72+12/70