Add 40/72 and 2/28
40/72 + 2/28 is 79/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 28 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
40/72 = 40 × 7/72 × 7 = 280/504 - Likewise, for the 2nd fraction, since 28 × 18 = 504,
2/28 = 2 × 18/28 × 18 = 36/504 - Add the two like fractions:
280/504 + 36/504 = 280 + 36/504 = 316/504 - 316/504 simplified gives 79/126
- So, 40/72 + 2/28 = 79/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/72+2/28 40/72+4/28 40/72+2/56 40/72+6/28 40/72+2/84 40/72+10/28 40/72+14/28