Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 72/40 and 1/42

1st number: 1 32/40, 2nd number: 1/42

72/40 + 1/42 is 383/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 42 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 40 × 21 = 840,
    72/40 = 72 × 21/40 × 21 = 1512/840
  3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
    1/42 = 1 × 20/42 × 20 = 20/840
  4. Add the two like fractions:
    1512/840 + 20/840 = 1512 + 20/840 = 1532/840
  5. 1532/840 simplified gives 383/210
  6. So, 72/40 + 1/42 = 383/210
    In mixed form: 1173/210

MathStep (Works offline)

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

Related:

© everydaycalculation.com