Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 21/7 and 90/16

1st number: 3 0/7, 2nd number: 5 10/16

21/7 + 90/16 is 69/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 16 is 112

    Next, find the equivalent fraction of both fractional numbers with denominator 112
  2. For the 1st fraction, since 7 × 16 = 112,
    21/7 = 21 × 16/7 × 16 = 336/112
  3. Likewise, for the 2nd fraction, since 16 × 7 = 112,
    90/16 = 90 × 7/16 × 7 = 630/112
  4. Add the two like fractions:
    336/112 + 630/112 = 336 + 630/112 = 966/112
  5. 966/112 simplified gives 69/8
  6. So, 21/7 + 90/16 = 69/8
    In mixed form: 85/8

MathStep (Works offline)

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

Related:

© everydaycalculation.com