Answers

Subtract 90/16 from 42/70

1^st number: 42/70, 2^nd number: 5 10/16

42/70 - 90/16 is -201/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 16 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 70 × 8 = 560,
   42/70 = 42 × 8/70 × 8 = 336/560
3. Likewise, for the 2nd fraction, since 16 × 35 = 560,
   90/16 = 90 × 35/16 × 35 = 3150/560
4. Subtract the two like fractions:
   336/560 - 3150/560 = 336 - 3150/560 = -2814/560
5. After reducing the fraction, the answer is -201/40

MathStep (Works offline)

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

Related: ⁸⁴/₇₀-⁹⁰/₁₆ ⁴²/₇₀-⁹⁰/₃₂ ⁴²/₇₀-⁹⁰/₄₈ ⁴²/₇₀-⁹⁰/₈₀

Subtract Fractions Calculator