Add 10/45 and 42/72
10/45 + 42/72 is 29/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
10/45 = 10 × 8/45 × 8 = 80/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
42/72 = 42 × 5/72 × 5 = 210/360 - Add the two like fractions:
80/360 + 210/360 = 80 + 210/360 = 290/360 - 290/360 simplified gives 29/36
- So, 10/45 + 42/72 = 29/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/45+42/72 10/45+84/72 10/90+42/72 30/45+42/72 50/45+42/72 70/45+42/72