Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 7/40 and 40/42

7/40 + 40/42 is 947/840.

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,
    7/40 = 7 × 21/40 × 21 = 147/840
  3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
    40/42 = 40 × 20/42 × 20 = 800/840
  4. Add the two like fractions:
    147/840 + 800/840 = 147 + 800/840 = 947/840
  5. So, 7/40 + 40/42 = 947/840
    In mixed form: 1107/840

MathStep (Works offline)

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

Related:

© everydaycalculation.com