Subtract 84/40 from 48/42
1st number: 1 6/42, 2nd number: 2 4/40
48/42 - 84/40 is -67/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
48/42 = 48 × 20/42 × 20 = 960/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
84/40 = 84 × 21/40 × 21 = 1764/840 - Subtract the two like fractions:
960/840 - 1764/840 = 960 - 1764/840 = -804/840 - After reducing the fraction, the answer is -67/70
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