Add 70/45 and 50/72
1st number: 1 25/45, 2nd number: 50/72
70/45 + 50/72 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
70/45 = 70 × 8/45 × 8 = 560/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
50/72 = 50 × 5/72 × 5 = 250/360 - Add the two like fractions:
560/360 + 250/360 = 560 + 250/360 = 810/360 - 810/360 simplified gives 9/4
- So, 70/45 + 50/72 = 9/4
In mixed form: 21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90+50/72