Subtract 9/30 from 45/21
1st number: 2 3/21, 2nd number: 9/30
45/21 - 9/30 is 129/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
45/21 = 45 × 10/21 × 10 = 450/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
9/30 = 9 × 7/30 × 7 = 63/210 - Subtract the two like fractions:
450/210 - 63/210 = 450 - 63/210 = 387/210 - After reducing the fraction, the answer is 129/70
- In mixed form: 159/70
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