Answers

Subtract 3/81 from 98/70

1^st number: 1 28/70, 2^nd number: 3/81

98/70 - 3/81 is 184/135.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 81 is 5670
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5670
2. For the 1st fraction, since 70 × 81 = 5670,
   98/70 = 98 × 81/70 × 81 = 7938/5670
3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
   3/81 = 3 × 70/81 × 70 = 210/5670
4. Subtract the two like fractions:
   7938/5670 - 210/5670 = 7938 - 210/5670 = 7728/5670
5. After reducing the fraction, the answer is 184/135
6. In mixed form: 149/135

MathStep (Works offline)

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

Related: ⁹⁸/₇₀-⁶/₈₁ ⁹⁸/₇₀-⁹/₈₁ ⁹⁸/₇₀-¹⁵/₈₁ ⁹⁸/₇₀-²¹/₈₁

Subtract Fractions Calculator