Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 90/72 and 45/90

1st number: 1 18/72, 2nd number: 45/90

90/72 + 45/90 is 7/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 90 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 72 × 5 = 360,
    90/72 = 90 × 5/72 × 5 = 450/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    45/90 = 45 × 4/90 × 4 = 180/360
  4. Add the two like fractions:
    450/360 + 180/360 = 450 + 180/360 = 630/360
  5. 630/360 simplified gives 7/4
  6. So, 90/72 + 45/90 = 7/4
    In mixed form: 13/4

MathStep (Works offline)

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

Related:

© everydaycalculation.com