Subtract 30/28 from 70/12
1st number: 5 10/12, 2nd number: 1 2/28
70/12 - 30/28 is 100/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
70/12 = 70 × 7/12 × 7 = 490/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
30/28 = 30 × 3/28 × 3 = 90/84 - Subtract the two like fractions:
490/84 - 90/84 = 490 - 90/84 = 400/84 - After reducing the fraction, the answer is 100/21
- In mixed form: 416/21
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