Subtract 27/21 from 15/50, Solve 15/50

Subtract 27/21 from 15/50

1^st number: 15/50, 2^nd number: 1 6/21

15/50 - 27/21 is -69/70.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 50 × 21 = 1050,
15/50 = 15 × 21/50 × 21 = 315/1050
Likewise, for the 2nd fraction, since 21 × 50 = 1050,
27/21 = 27 × 50/21 × 50 = 1350/1050
Subtract the two like fractions:
315/1050 - 1350/1050 = 315 - 1350/1050 = -1035/1050
After reducing the fraction, the answer is -69/70

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