Subtract 56/8 from 4/42
1st number: 4/42, 2nd number: 7 0/8
4/42 - 56/8 is -145/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
4/42 = 4 × 4/42 × 4 = 16/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
56/8 = 56 × 21/8 × 21 = 1176/168 - Subtract the two like fractions:
16/168 - 1176/168 = 16 - 1176/168 = -1160/168 - After reducing the fraction, the answer is -145/21
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