Subtract 45/42 from 30/4
1st number: 7 2/4, 2nd number: 1 3/42
30/4 - 45/42 is 45/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
30/4 = 30 × 21/4 × 21 = 630/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
45/42 = 45 × 2/42 × 2 = 90/84 - Subtract the two like fractions:
630/84 - 90/84 = 630 - 90/84 = 540/84 - After reducing the fraction, the answer is 45/7
- In mixed form: 63/7
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