Subtract 15/20 from 40/10, Solve 4 0/10

Subtract 15/20 from 40/10

1^st number: 4 0/10, 2^nd number: 15/20

40/10 - 15/20 is 13/4.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20

Next, find the equivalent fraction of both fractional numbers with denominator 20
For the 1st fraction, since 10 × 2 = 20,
40/10 = 40 × 2/10 × 2 = 80/20
Likewise, for the 2nd fraction, since 20 × 1 = 20,
15/20 = 15 × 1/20 × 1 = 15/20
Subtract the two like fractions:
80/20 - 15/20 = 80 - 15/20 = 65/20
After reducing the fraction, the answer is 13/4
In mixed form: 31/4

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