Subtract 7/15 from 42/56
42/56 - 7/15 is 17/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 15 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
42/56 = 42 × 15/56 × 15 = 630/840 - Likewise, for the 2nd fraction, since 15 × 56 = 840,
7/15 = 7 × 56/15 × 56 = 392/840 - Subtract the two like fractions:
630/840 - 392/840 = 630 - 392/840 = 238/840 - After reducing the fraction, the answer is 17/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56-7/15 42/56-14/15 42/56-7/30 42/56-21/15 42/56-7/45 42/56-35/15 42/56-7/75 42/56-49/15