Subtract 30/9 from 81/50, Solve 1 31/50

Subtract 30/9 from 81/50

1^st number: 1 31/50, 2^nd number: 3 3/9

81/50 - 30/9 is -257/150.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 9 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 50 × 9 = 450,
81/50 = 81 × 9/50 × 9 = 729/450
Likewise, for the 2nd fraction, since 9 × 50 = 450,
30/9 = 30 × 50/9 × 50 = 1500/450
Subtract the two like fractions:
729/450 - 1500/450 = 729 - 1500/450 = -771/450
After reducing the fraction, the answer is -257/150

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