Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 40/42 and 90/72

1st number: 40/42, 2nd number: 1 18/72

40/42 + 90/72 is 185/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 72 is 504
  2. For the 1st fraction, since 42 × 12 = 504,
    40/42 = 40 × 12/42 × 12 = 480/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    90/72 = 90 × 7/72 × 7 = 630/504
  4. Add the two fractions:
    480/504 + 630/504 = 480 + 630/504 = 1110/504
  5. 1110/504 simplified gives 185/84
  6. So, 40/42 + 90/72 = 185/84
    In mixed form: 217/84

MathStep (Works offline)

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

Related:

© everydaycalculation.com