Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 84/21 and 1/40

1st number: 4 0/21, 2nd number: 1/40

84/21 + 1/40 is 161/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 40 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 21 × 40 = 840,
    84/21 = 84 × 40/21 × 40 = 3360/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    1/40 = 1 × 21/40 × 21 = 21/840
  4. Add the two like fractions:
    3360/840 + 21/840 = 3360 + 21/840 = 3381/840
  5. 3381/840 simplified gives 161/40
  6. So, 84/21 + 1/40 = 161/40
    In mixed form: 41/40

MathStep (Works offline)

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

Related:

© everydaycalculation.com