Subtract 20/30 from 9/14, Solve 9/14

Subtract 20/30 from 9/14

9/14 - 20/30 is -1/42.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 14 × 15 = 210,
9/14 = 9 × 15/14 × 15 = 135/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
20/30 = 20 × 7/30 × 7 = 140/210
Subtract the two like fractions:
135/210 - 140/210 = 135 - 140/210 = -5/210
After reducing the fraction, the answer is -1/42

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