Subtract 1/21 from 63/45
1st number: 1 18/45, 2nd number: 1/21
63/45 - 1/21 is 142/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
63/45 = 63 × 7/45 × 7 = 441/315 - Likewise, for the 2nd fraction, since 21 × 15 = 315,
1/21 = 1 × 15/21 × 15 = 15/315 - Subtract the two like fractions:
441/315 - 15/315 = 441 - 15/315 = 426/315 - After reducing the fraction, the answer is 142/105
- In mixed form: 137/105
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