Subtract 72/35 from 60/42, Solve 1 18/42

Subtract 72/35 from 60/42

1^st number: 1 18/42, 2^nd number: 2 2/35

60/42 - 72/35 is -22/35.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
60/42 = 60 × 5/42 × 5 = 300/210
Likewise, for the 2nd fraction, since 35 × 6 = 210,
72/35 = 72 × 6/35 × 6 = 432/210
Subtract the two like fractions:
300/210 - 432/210 = 300 - 432/210 = -132/210
After reducing the fraction, the answer is -22/35

MathStep (Works offline)

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