Subtract 81/30 from 12/35, Solve 12/35

Subtract 81/30 from 12/35

1^st number: 12/35, 2^nd number: 2 21/30

12/35 - 81/30 is -33/14.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 35 × 6 = 210,
12/35 = 12 × 6/35 × 6 = 72/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
81/30 = 81 × 7/30 × 7 = 567/210
Subtract the two like fractions:
72/210 - 567/210 = 72 - 567/210 = -495/210
After reducing the fraction, the answer is -33/14

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