Subtract 8/40 from 75/10, Solve 7 5/10

Subtract 8/40 from 75/10

1^st number: 7 5/10, 2^nd number: 8/40

75/10 - 8/40 is 73/10.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40

Next, find the equivalent fraction of both fractional numbers with denominator 40
For the 1st fraction, since 10 × 4 = 40,
75/10 = 75 × 4/10 × 4 = 300/40
Likewise, for the 2nd fraction, since 40 × 1 = 40,
8/40 = 8 × 1/40 × 1 = 8/40
Subtract the two like fractions:
300/40 - 8/40 = 300 - 8/40 = 292/40
After reducing the fraction, the answer is 73/10
In mixed form: 73/10

MathStep (Works offline)

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