Answers

Subtract 50/16 from 70/90

1^st number: 70/90, 2^nd number: 3 2/16

70/90 - 50/16 is -169/72.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 16 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 90 × 8 = 720,
   70/90 = 70 × 8/90 × 8 = 560/720
3. Likewise, for the 2nd fraction, since 16 × 45 = 720,
   50/16 = 50 × 45/16 × 45 = 2250/720
4. Subtract the two like fractions:
   560/720 - 2250/720 = 560 - 2250/720 = -1690/720
5. After reducing the fraction, the answer is -169/72

MathStep (Works offline)

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

Related: ⁷⁰/₉₀-⁵⁰/₃₂ ⁷⁰/₉₀-⁵⁰/₄₈ ⁷⁰/₉₀-⁵⁰/₈₀

Subtract Fractions Calculator