Subtract 70/27 from 32/21
1st number: 1 11/21, 2nd number: 2 16/27
32/21 - 70/27 is -202/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 21 × 9 = 189,
32/21 = 32 × 9/21 × 9 = 288/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
70/27 = 70 × 7/27 × 7 = 490/189 - Subtract the two like fractions:
288/189 - 490/189 = 288 - 490/189 = -202/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/21-70/27 32/42-70/27 32/21-70/54 96/21-70/27 32/63-70/27 32/21-70/81