Subtract 45/24 from 7/20, Solve 7/20

Subtract 45/24 from 7/20

1^st number: 7/20, 2^nd number: 1 21/24

7/20 - 45/24 is -61/40.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 24 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 20 × 6 = 120,
7/20 = 7 × 6/20 × 6 = 42/120
Likewise, for the 2nd fraction, since 24 × 5 = 120,
45/24 = 45 × 5/24 × 5 = 225/120
Subtract the two like fractions:
42/120 - 225/120 = 42 - 225/120 = -183/120
After reducing the fraction, the answer is -61/40

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