Subtract 56/15 from 75/27, Solve 2 21/27

Subtract 56/15 from 75/27

1^st number: 2 21/27, 2^nd number: 3 11/15

75/27 - 56/15 is -43/45.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 15 is 135

Next, find the equivalent fraction of both fractional numbers with denominator 135
For the 1st fraction, since 27 × 5 = 135,
75/27 = 75 × 5/27 × 5 = 375/135
Likewise, for the 2nd fraction, since 15 × 9 = 135,
56/15 = 56 × 9/15 × 9 = 504/135
Subtract the two like fractions:
375/135 - 504/135 = 375 - 504/135 = -129/135
After reducing the fraction, the answer is -43/45

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