Answers

Subtract 49/80 from 32/70

32/70 - 49/80 is -87/560.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 70 × 8 = 560,
   32/70 = 32 × 8/70 × 8 = 256/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   49/80 = 49 × 7/80 × 7 = 343/560
4. Subtract the two like fractions:
   256/560 - 343/560 = 256 - 343/560 = -87/560

MathStep (Works offline)

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

Related: ⁶⁴/₇₀-⁴⁹/₈₀ ³²/₇₀-⁹⁸/₈₀ ⁹⁶/₇₀-⁴⁹/₈₀

Subtract Fractions Calculator