Subtract 42/49 from 90/5
1st number: 18 0/5, 2nd number: 42/49
90/5 - 42/49 is 120/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 49 is 245
Next, find the equivalent fraction of both fractional numbers with denominator 245 - For the 1st fraction, since 5 × 49 = 245,
90/5 = 90 × 49/5 × 49 = 4410/245 - Likewise, for the 2nd fraction, since 49 × 5 = 245,
42/49 = 42 × 5/49 × 5 = 210/245 - Subtract the two like fractions:
4410/245 - 210/245 = 4410 - 210/245 = 4200/245 - After reducing the fraction, the answer is 120/7
- In mixed form: 171/7
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