Subtract 45/21 from 7/30
1st number: 7/30, 2nd number: 2 3/21
7/30 - 45/21 is -401/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
7/30 = 7 × 7/30 × 7 = 49/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
45/21 = 45 × 10/21 × 10 = 450/210 - Subtract the two like fractions:
49/210 - 450/210 = 49 - 450/210 = -401/210
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