Subtract 72/8 from 70/84
1st number: 70/84, 2nd number: 9 0/8
70/84 - 72/8 is -49/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
70/84 = 70 × 2/84 × 2 = 140/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
72/8 = 72 × 21/8 × 21 = 1512/168 - Subtract the two like fractions:
140/168 - 1512/168 = 140 - 1512/168 = -1372/168 - After reducing the fraction, the answer is -49/6
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