Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 7/18 and 21/8

1st number: 7/18, 2nd number: 2 5/8

7/18 + 21/8 is 217/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 8 is 72
  2. For the 1st fraction, since 18 × 4 = 72,
    7/18 = 7 × 4/18 × 4 = 28/72
  3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
    21/8 = 21 × 9/8 × 9 = 189/72
  4. Add the two fractions:
    28/72 + 189/72 = 28 + 189/72 = 217/72
  5. In mixed form: 31/72

Related:

Use fraction calculator with our all-in-one calculator app: Download for Android, Download for iOS

© everydaycalculation.com