Subtract 21/30 from 70/15
1st number: 4 10/15, 2nd number: 21/30
70/15 - 21/30 is 119/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
70/15 = 70 × 2/15 × 2 = 140/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
21/30 = 21 × 1/30 × 1 = 21/30 - Subtract the two like fractions:
140/30 - 21/30 = 140 - 21/30 = 119/30 - In mixed form: 329/30
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