Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 15/72 and 72/20

1st number: 15/72, 2nd number: 3 12/20

15/72 + 72/20 is 457/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 20 is 360
  2. For the 1st fraction, since 72 × 5 = 360,
    15/72 = 15 × 5/72 × 5 = 75/360
  3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
    72/20 = 72 × 18/20 × 18 = 1296/360
  4. Add the two fractions:
    75/360 + 1296/360 = 75 + 1296/360 = 1371/360
  5. After reducing the fraction, the answer is 457/120
  6. In mixed form: 397/120

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related:

© everydaycalculation.com