Add 70/72 and 36/45
70/72 + 36/45 is 319/180.
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,
70/72 = 70 × 5/72 × 5 = 350/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
36/45 = 36 × 8/45 × 8 = 288/360 - Add the two like fractions:
350/360 + 288/360 = 350 + 288/360 = 638/360 - 638/360 simplified gives 319/180
- So, 70/72 + 36/45 = 319/180
In mixed form: 1139/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/72+72/45 70/72+36/90