Subtract 25/6 from 70/40, Solve 1 30/40

Subtract 25/6 from 70/40

1^st number: 1 30/40, 2^nd number: 4 1/6

70/40 - 25/6 is -29/12.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 6 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
70/40 = 70 × 3/40 × 3 = 210/120
Likewise, for the 2nd fraction, since 6 × 20 = 120,
25/6 = 25 × 20/6 × 20 = 500/120
Subtract the two like fractions:
210/120 - 500/120 = 210 - 500/120 = -290/120
After reducing the fraction, the answer is -29/12

MathStep (Works offline)

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