Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 42/56 and 10/90

42/56 + 10/90 is 31/36.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 90 is 2520
  2. For the 1st fraction, since 56 × 45 = 2520,
    42/56 = 42 × 45/56 × 45 = 1890/2520
  3. Likewise, for the 2nd fraction, since 90 × 28 = 2520,
    10/90 = 10 × 28/90 × 28 = 280/2520
  4. Add the two fractions:
    1890/2520 + 280/2520 = 1890 + 280/2520 = 2170/2520
  5. After reducing the fraction, the answer is 31/36

MathStep (Works offline)

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

Related:

© everydaycalculation.com