Answers

Subtract 6/18 from 70/40

1^st number: 1 30/40, 2^nd number: 6/18

70/40 - 6/18 is 17/12.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 18 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   70/40 = 70 × 9/40 × 9 = 630/360
3. Likewise, for the 2nd fraction, since 18 × 20 = 360,
   6/18 = 6 × 20/18 × 20 = 120/360
4. Subtract the two like fractions:
   630/360 - 120/360 = 630 - 120/360 = 510/360
5. After reducing the fraction, the answer is 17/12
6. In mixed form: 15/12

MathStep (Works offline)

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

Related: ⁷⁰/₄₀-¹²/₁₈ ⁷⁰/₈₀-⁶/₁₈ ⁷⁰/₄₀-⁶/₃₆ ⁷⁰/₄₀-⁶/₅₄ ⁷⁰/₄₀-³⁰/₁₈ ⁷⁰/₄₀-⁶/₉₀ ⁷⁰/₄₀-⁴²/₁₈

Subtract Fractions Calculator