Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Add fractions

Add 35/21 and 90/40

1st number: 1 14/21, 2nd number: 2 10/40

35/21 + 90/40 is 47/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 40 is 840
  2. For the 1st fraction, since 21 × 40 = 840,
    35/21 = 35 × 40/21 × 40 = 1400/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    90/40 = 90 × 21/40 × 21 = 1890/840
  4. Add the two fractions:
    1400/840 + 1890/840 = 1400 + 1890/840 = 3290/840
  5. After reducing the fraction, the answer is 47/12
  6. In mixed form: 311/12

MathStep (Works offline)

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

Related:

© everydaycalculation.com