Add 21/36 and 1/40
21/36 + 1/40 is 73/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 36 × 10 = 360,
21/36 = 21 × 10/36 × 10 = 210/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
1/40 = 1 × 9/40 × 9 = 9/360 - Add the two like fractions:
210/360 + 9/360 = 210 + 9/360 = 219/360 - 219/360 simplified gives 73/120
- So, 21/36 + 1/40 = 73/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36+1/40 21/36+2/40 21/72+1/40 21/36+1/80 63/36+1/40 21/36+3/40 21/36+5/40 21/36+7/40