Subtract 60/5 from 90/42
1st number: 2 6/42, 2nd number: 12 0/5
90/42 - 60/5 is -69/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
90/42 = 90 × 5/42 × 5 = 450/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
60/5 = 60 × 42/5 × 42 = 2520/210 - Subtract the two like fractions:
450/210 - 2520/210 = 450 - 2520/210 = -2070/210 - After reducing the fraction, the answer is -69/7
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