Answers

Subtract 80/35 from 30/90

1^st number: 30/90, 2^nd number: 2 10/35

30/90 - 80/35 is -41/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 35 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   30/90 = 30 × 7/90 × 7 = 210/630
3. Likewise, for the 2nd fraction, since 35 × 18 = 630,
   80/35 = 80 × 18/35 × 18 = 1440/630
4. Subtract the two like fractions:
   210/630 - 1440/630 = 210 - 1440/630 = -1230/630
5. After reducing the fraction, the answer is -41/21

MathStep (Works offline)

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

Related: ⁶⁰/₉₀-⁸⁰/₃₅ ³⁰/₉₀-⁸⁰/₇₀

Subtract Fractions Calculator