Subtract 20/63 from 70/45
1st number: 1 25/45, 2nd number: 20/63
70/45 - 20/63 is 26/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
70/45 = 70 × 7/45 × 7 = 490/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
20/63 = 20 × 5/63 × 5 = 100/315 - Subtract the two like fractions:
490/315 - 100/315 = 490 - 100/315 = 390/315 - After reducing the fraction, the answer is 26/21
- In mixed form: 15/21
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