Subtract 90/42 from 9/80
1st number: 9/80, 2nd number: 2 6/42
9/80 - 90/42 is -1137/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
9/80 = 9 × 21/80 × 21 = 189/1680 - Likewise, for the 2nd fraction, since 42 × 40 = 1680,
90/42 = 90 × 40/42 × 40 = 3600/1680 - Subtract the two like fractions:
189/1680 - 3600/1680 = 189 - 3600/1680 = -3411/1680 - After reducing the fraction, the answer is -1137/560
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