Answers

Subtract 70/63 from 42/35

1^st number: 1 7/35, 2^nd number: 1 7/63

42/35 - 70/63 is 4/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 35 × 9 = 315,
   42/35 = 42 × 9/35 × 9 = 378/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   70/63 = 70 × 5/63 × 5 = 350/315
4. Subtract the two like fractions:
   378/315 - 350/315 = 378 - 350/315 = 28/315
5. After reducing the fraction, the answer is 4/45

MathStep (Works offline)

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

Related: ⁸⁴/₃₅-⁷⁰/₆₃ ⁴²/₇₀-⁷⁰/₆₃

Subtract Fractions Calculator