Answers

Subtract 15/70 from 42/25

1^st number: 1 17/25, 2^nd number: 15/70

42/25 - 15/70 is 513/350.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 70 is 350
   
   Next, find the equivalent fraction of both fractional numbers with denominator 350
2. For the 1st fraction, since 25 × 14 = 350,
   42/25 = 42 × 14/25 × 14 = 588/350
3. Likewise, for the 2nd fraction, since 70 × 5 = 350,
   15/70 = 15 × 5/70 × 5 = 75/350
4. Subtract the two like fractions:
   588/350 - 75/350 = 588 - 75/350 = 513/350
5. In mixed form: 1163/350

MathStep (Works offline)

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

Related: ⁸⁴/₂₅-¹⁵/₇₀ ⁴²/₂₅-³⁰/₇₀ ⁴²/₅₀-¹⁵/₇₀ ⁴²/₂₅-⁴⁵/₇₀ ⁴²/₇₅-¹⁵/₇₀ ⁴²/₂₅-⁷⁵/₇₀

Subtract Fractions Calculator