Subtract 7/14 from 21/30
21/30 - 7/14 is 1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 14 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
21/30 = 21 × 7/30 × 7 = 147/210 - Likewise, for the 2nd fraction, since 14 × 15 = 210,
7/14 = 7 × 15/14 × 15 = 105/210 - Subtract the two like fractions:
147/210 - 105/210 = 147 - 105/210 = 42/210 - After reducing the fraction, the answer is 1/5
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