Answers

Subtract 40/70 from 60/45

1^st number: 1 15/45, 2^nd number: 40/70

60/45 - 40/70 is 16/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 45 × 14 = 630,
   60/45 = 60 × 14/45 × 14 = 840/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   40/70 = 40 × 9/70 × 9 = 360/630
4. Subtract the two like fractions:
   840/630 - 360/630 = 840 - 360/630 = 480/630
5. After reducing the fraction, the answer is 16/21

MathStep (Works offline)

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

Related: ⁶⁰/₄₅-⁸⁰/₇₀ ⁶⁰/₉₀-⁴⁰/₇₀

Subtract Fractions Calculator