Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 72/63 and 21/36

1st number: 1 9/63, 2nd number: 21/36

72/63 + 21/36 is 145/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 36 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 63 × 4 = 252,
    72/63 = 72 × 4/63 × 4 = 288/252
  3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
    21/36 = 21 × 7/36 × 7 = 147/252
  4. Add the two like fractions:
    288/252 + 147/252 = 288 + 147/252 = 435/252
  5. 435/252 simplified gives 145/84
  6. So, 72/63 + 21/36 = 145/84
    In mixed form: 161/84

MathStep (Works offline)

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

Related:

© everydaycalculation.com