Answers

Subtract 15/75 from 42/18

1^st number: 2 6/18, 2^nd number: 15/75

42/18 - 15/75 is 32/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 75 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 18 × 25 = 450,
   42/18 = 42 × 25/18 × 25 = 1050/450
3. Likewise, for the 2nd fraction, since 75 × 6 = 450,
   15/75 = 15 × 6/75 × 6 = 90/450
4. Subtract the two like fractions:
   1050/450 - 90/450 = 1050 - 90/450 = 960/450
5. After reducing the fraction, the answer is 32/15
6. In mixed form: 22/15

MathStep (Works offline)

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

Related: ⁸⁴/₁₈-¹⁵/₇₅ ⁴²/₁₈-³⁰/₇₅ ⁴²/₃₆-¹⁵/₇₅ ⁴²/₁₈-⁴⁵/₇₅ ⁴²/₅₄-¹⁵/₇₅ ⁴²/₉₀-¹⁵/₇₅

Subtract Fractions Calculator