Add 75/72 and 40/45
1st number: 1 3/72, 2nd number: 40/45
75/72 + 40/45 is 139/72.
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,
75/72 = 75 × 5/72 × 5 = 375/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
40/45 = 40 × 8/45 × 8 = 320/360 - Add the two like fractions:
375/360 + 320/360 = 375 + 320/360 = 695/360 - 695/360 simplified gives 139/72
- So, 75/72 + 40/45 = 139/72
In mixed form: 167/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/72+80/45 75/72+40/90