Subtract 4/45 from 90/42
1st number: 2 6/42, 2nd number: 4/45
90/42 - 4/45 is 647/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
90/42 = 90 × 15/42 × 15 = 1350/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
4/45 = 4 × 14/45 × 14 = 56/630 - Subtract the two like fractions:
1350/630 - 56/630 = 1350 - 56/630 = 1294/630 - After reducing the fraction, the answer is 647/315
- In mixed form: 217/315
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