Add 70/72 and 45/40
1st number: 70/72, 2nd number: 1 5/40
70/72 + 45/40 is 151/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 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 40 × 9 = 360,
45/40 = 45 × 9/40 × 9 = 405/360 - Add the two like fractions:
350/360 + 405/360 = 350 + 405/360 = 755/360 - 755/360 simplified gives 151/72
- So, 70/72 + 45/40 = 151/72
In mixed form: 27/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/72+90/40 70/72+45/80