Subtract 70/84 from 90/12
1st number: 7 6/12, 2nd number: 70/84
90/12 - 70/84 is 20/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
90/12 = 90 × 7/12 × 7 = 630/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
70/84 = 70 × 1/84 × 1 = 70/84 - Subtract the two like fractions:
630/84 - 70/84 = 630 - 70/84 = 560/84 - After reducing the fraction, the answer is 20/3
- In mixed form: 62/3
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