Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 45/63 and 12/40

45/63 + 12/40 is 71/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 40 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 63 × 40 = 2520,
    45/63 = 45 × 40/63 × 40 = 1800/2520
  3. Likewise, for the 2nd fraction, since 40 × 63 = 2520,
    12/40 = 12 × 63/40 × 63 = 756/2520
  4. Add the two like fractions:
    1800/2520 + 756/2520 = 1800 + 756/2520 = 2556/2520
  5. 2556/2520 simplified gives 71/70
  6. So, 45/63 + 12/40 = 71/70
    In mixed form: 11/70

MathStep (Works offline)

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

Related:

© everydaycalculation.com