Subtract 12/27 from 42/7
1st number: 6 0/7, 2nd number: 12/27
42/7 - 12/27 is 50/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 7 × 27 = 189,
42/7 = 42 × 27/7 × 27 = 1134/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
12/27 = 12 × 7/27 × 7 = 84/189 - Subtract the two like fractions:
1134/189 - 84/189 = 1134 - 84/189 = 1050/189 - After reducing the fraction, the answer is 50/9
- In mixed form: 55/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7-12/27 42/7-24/27 42/14-12/27 42/7-12/54 42/7-36/27 42/21-12/27 42/7-12/81 42/7-60/27 42/35-12/27 42/7-84/27 42/49-12/27