Subtract 9/45 from 54/21
1st number: 2 12/21, 2nd number: 9/45
54/21 - 9/45 is 83/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
54/21 = 54 × 15/21 × 15 = 810/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
9/45 = 9 × 7/45 × 7 = 63/315 - Subtract the two like fractions:
810/315 - 63/315 = 810 - 63/315 = 747/315 - After reducing the fraction, the answer is 83/35
- In mixed form: 213/35
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