Subtract 10/49 from 42/70
42/70 - 10/49 is 97/245.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
42/70 = 42 × 7/70 × 7 = 294/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
10/49 = 10 × 10/49 × 10 = 100/490 - Subtract the two like fractions:
294/490 - 100/490 = 294 - 100/490 = 194/490 - After reducing the fraction, the answer is 97/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70-10/49 42/70-20/49 42/70-10/98 42/70-30/49 42/70-50/49 42/70-70/49