Subtract 49/15 from 42/70
1st number: 42/70, 2nd number: 3 4/15
42/70 - 49/15 is -8/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
42/70 = 42 × 3/70 × 3 = 126/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
49/15 = 49 × 14/15 × 14 = 686/210 - Subtract the two like fractions:
126/210 - 686/210 = 126 - 686/210 = -560/210 - After reducing the fraction, the answer is -8/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70-49/15 42/70-98/15 42/70-49/30 42/70-49/45 42/70-49/75