Subtract 56/12 from 45/25, Solve 1 20/25

Subtract 56/12 from 45/25

1^st number: 1 20/25, 2^nd number: 4 8/12

45/25 - 56/12 is -43/15.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 12 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 25 × 12 = 300,
45/25 = 45 × 12/25 × 12 = 540/300
Likewise, for the 2nd fraction, since 12 × 25 = 300,
56/12 = 56 × 25/12 × 25 = 1400/300
Subtract the two like fractions:
540/300 - 1400/300 = 540 - 1400/300 = -860/300
After reducing the fraction, the answer is -43/15

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