Answers

Subtract 4/70 from 70/80

70/80 - 4/70 is 229/280.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 70 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   70/80 = 70 × 7/80 × 7 = 490/560
3. Likewise, for the 2nd fraction, since 70 × 8 = 560,
   4/70 = 4 × 8/70 × 8 = 32/560
4. Subtract the two like fractions:
   490/560 - 32/560 = 490 - 32/560 = 458/560
5. After reducing the fraction, the answer is 229/280

MathStep (Works offline)

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

Related: ⁷⁰/₈₀-⁸/₇₀ ⁷⁰/₈₀-¹²/₇₀ ⁷⁰/₈₀-²⁰/₇₀ ⁷⁰/₈₀-²⁸/₇₀

Subtract Fractions Calculator