Subtract 90/6 from 63/42
1st number: 1 21/42, 2nd number: 15 0/6
63/42 - 90/6 is -27/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
63/42 = 63 × 1/42 × 1 = 63/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
90/6 = 90 × 7/6 × 7 = 630/42 - Subtract the two like fractions:
63/42 - 630/42 = 63 - 630/42 = -567/42 - After reducing the fraction, the answer is -27/2
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