Subtract 21/30 from 9/7
1st number: 1 2/7, 2nd number: 21/30
9/7 - 21/30 is 41/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
9/7 = 9 × 30/7 × 30 = 270/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
21/30 = 21 × 7/30 × 7 = 147/210 - Subtract the two like fractions:
270/210 - 147/210 = 270 - 147/210 = 123/210 - After reducing the fraction, the answer is 41/70
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