Subtract 6/21 from 70/45
1st number: 1 25/45, 2nd number: 6/21
70/45 - 6/21 is 80/63.
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,
70/45 = 70 × 7/45 × 7 = 490/315 - Likewise, for the 2nd fraction, since 21 × 15 = 315,
6/21 = 6 × 15/21 × 15 = 90/315 - Subtract the two like fractions:
490/315 - 90/315 = 490 - 90/315 = 400/315 - After reducing the fraction, the answer is 80/63
- In mixed form: 117/63
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