Subtract 15/40 from 9/3, Solve 3 0/3

Subtract 15/40 from 9/3

1^st number: 3 0/3, 2^nd number: 15/40

9/3 - 15/40 is 21/8.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 3 × 40 = 120,
9/3 = 9 × 40/3 × 40 = 360/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
15/40 = 15 × 3/40 × 3 = 45/120
Subtract the two like fractions:
360/120 - 45/120 = 360 - 45/120 = 315/120
After reducing the fraction, the answer is 21/8
In mixed form: 25/8

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