Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Subtract fractions

Subtract 40/18 from 15/70

1st number: 15/70, 2nd number: 2 4/18

15/70 - 40/18 is -253/126.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 18 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 70 × 9 = 630,
    15/70 = 15 × 9/70 × 9 = 135/630
  3. Likewise, for the 2nd fraction, since 18 × 35 = 630,
    40/18 = 40 × 35/18 × 35 = 1400/630
  4. Subtract the two like fractions:
    135/630 - 1400/630 = 135 - 1400/630 = -1265/630
  5. After reducing the fraction, the answer is -253/126

MathStep (Works offline)

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

Related:

© everydaycalculation.com