Subtract 70/63 from 2/27, Solve 2/27

Subtract 70/63 from 2/27

1^st number: 2/27, 2^nd number: 1 7/63

2/27 - 70/63 is -28/27.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 63 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 27 × 7 = 189,
2/27 = 2 × 7/27 × 7 = 14/189
Likewise, for the 2nd fraction, since 63 × 3 = 189,
70/63 = 70 × 3/63 × 3 = 210/189
Subtract the two like fractions:
14/189 - 210/189 = 14 - 210/189 = -196/189
After reducing the fraction, the answer is -28/27

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad