Subtract 2/9 from 42/49
42/49 - 2/9 is 40/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 9 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 49 × 9 = 441,
42/49 = 42 × 9/49 × 9 = 378/441 - Likewise, for the 2nd fraction, since 9 × 49 = 441,
2/9 = 2 × 49/9 × 49 = 98/441 - Subtract the two like fractions:
378/441 - 98/441 = 378 - 98/441 = 280/441 - After reducing the fraction, the answer is 40/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/49-2/9 42/49-4/9 42/98-2/9 42/49-2/18 42/49-6/9 42/49-2/27 42/49-10/9 42/49-2/45 42/49-14/9 42/49-2/63