Subtract 90/7 from 40/60
1st number: 40/60, 2nd number: 12 6/7
40/60 - 90/7 is -256/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 7 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
40/60 = 40 × 7/60 × 7 = 280/420 - Likewise, for the 2nd fraction, since 7 × 60 = 420,
90/7 = 90 × 60/7 × 60 = 5400/420 - Subtract the two like fractions:
280/420 - 5400/420 = 280 - 5400/420 = -5120/420 - After reducing the fraction, the answer is -256/21
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