Add 40/72 and 6/45
40/72 + 6/45 is 31/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
40/72 = 40 × 5/72 × 5 = 200/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
6/45 = 6 × 8/45 × 8 = 48/360 - Add the two like fractions:
200/360 + 48/360 = 200 + 48/360 = 248/360 - 248/360 simplified gives 31/45
- So, 40/72 + 6/45 = 31/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/72+6/45 40/72+12/45 40/72+6/90 40/72+18/45 40/72+30/45 40/72+42/45