Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 42/21 and 2/45

1st number: 2 0/21, 2nd number: 2/45

42/21 + 2/45 is 92/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 21 × 15 = 315,
    42/21 = 42 × 15/21 × 15 = 630/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    2/45 = 2 × 7/45 × 7 = 14/315
  4. Add the two like fractions:
    630/315 + 14/315 = 630 + 14/315 = 644/315
  5. 644/315 simplified gives 92/45
  6. So, 42/21 + 2/45 = 92/45
    In mixed form: 22/45

MathStep (Works offline)

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

Related:

© everydaycalculation.com