Subtract 9/42 from 81/45
1st number: 1 36/45, 2nd number: 9/42
81/45 - 9/42 is 111/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
81/45 = 81 × 14/45 × 14 = 1134/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
9/42 = 9 × 15/42 × 15 = 135/630 - Subtract the two like fractions:
1134/630 - 135/630 = 1134 - 135/630 = 999/630 - After reducing the fraction, the answer is 111/70
- In mixed form: 141/70
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