Answers

Subtract 8/42 from 70/10

1^st number: 7 0/10, 2^nd number: 8/42

70/10 - 8/42 is 143/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 42 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 10 × 21 = 210,
   70/10 = 70 × 21/10 × 21 = 1470/210
3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
   8/42 = 8 × 5/42 × 5 = 40/210
4. Subtract the two like fractions:
   1470/210 - 40/210 = 1470 - 40/210 = 1430/210
5. After reducing the fraction, the answer is 143/21
6. In mixed form: 617/21

MathStep (Works offline)

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

Related: ⁷⁰/₁₀-¹⁶/₄₂ ⁷⁰/₂₀-⁸/₄₂ ⁷⁰/₁₀-⁸/₈₄ ⁷⁰/₁₀-²⁴/₄₂ ⁷⁰/₃₀-⁸/₄₂ ⁷⁰/₁₀-⁴⁰/₄₂ ⁷⁰/₅₀-⁸/₄₂ ⁷⁰/₁₀-⁵⁶/₄₂

Subtract Fractions Calculator