Subtract 20/35 from 75/80, Solve 75/80

Subtract 20/35 from 75/80

75/80 - 20/35 is 41/112.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 35 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 80 × 7 = 560,
75/80 = 75 × 7/80 × 7 = 525/560
Likewise, for the 2nd fraction, since 35 × 16 = 560,
20/35 = 20 × 16/35 × 16 = 320/560
Subtract the two like fractions:
525/560 - 320/560 = 525 - 320/560 = 205/560
After reducing the fraction, the answer is 41/112

MathStep (Works offline)

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