Answers

Solutions by everydaycalculation.com

Everydaycalculation.com » Answers » Subtract fractions

Subtract 40/7 from 30/63

1st number: 30/63, 2nd number: 5 5/7

30/63 - 40/7 is -110/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 7 is 63
  2. For the 1st fraction, since 63 × 1 = 63,
    30/63 = 30 × 1/63 × 1 = 30/63
  3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
    40/7 = 40 × 9/7 × 9 = 360/63
  4. Subtract the two fractions:
    30/63 - 360/63 = 30 - 360/63 = -330/63
  5. After reducing the fraction, the answer is -110/21

MathStep (Works offline)

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

Related:

© everydaycalculation.com