Subtract 30/7 from 70/9
1st number: 7 7/9, 2nd number: 4 2/7
70/9 - 30/7 is 220/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
70/9 = 70 × 7/9 × 7 = 490/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
30/7 = 30 × 9/7 × 9 = 270/63 - Subtract the two like fractions:
490/63 - 270/63 = 490 - 270/63 = 220/63 - In mixed form: 331/63
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