Answers

Subtract 25/42 from 42/30

1^st number: 1 12/30, 2^nd number: 25/42

42/30 - 25/42 is 169/210.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 42 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 30 × 7 = 210,
   42/30 = 42 × 7/30 × 7 = 294/210
3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
   25/42 = 25 × 5/42 × 5 = 125/210
4. Subtract the two like fractions:
   294/210 - 125/210 = 294 - 125/210 = 169/210

MathStep (Works offline)

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

Related: ⁸⁴/₃₀-²⁵/₄₂ ⁴²/₃₀-⁵⁰/₄₂ ⁴²/₆₀-²⁵/₄₂ ⁴²/₃₀-²⁵/₈₄ ⁴²/₃₀-⁷⁵/₄₂ ⁴²/₉₀-²⁵/₄₂

Subtract Fractions Calculator