Subtract 30/8 from 45/84
1st number: 45/84, 2nd number: 3 6/8
45/84 - 30/8 is -45/14.
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,
45/84 = 45 × 2/84 × 2 = 90/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
30/8 = 30 × 21/8 × 21 = 630/168 - Subtract the two like fractions:
90/168 - 630/168 = 90 - 630/168 = -540/168 - After reducing the fraction, the answer is -45/14
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