Subtract 45/70 from 42/24
1st number: 1 18/24, 2nd number: 45/70
42/24 - 45/70 is 31/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 70 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 24 × 35 = 840,
42/24 = 42 × 35/24 × 35 = 1470/840 - Likewise, for the 2nd fraction, since 70 × 12 = 840,
45/70 = 45 × 12/70 × 12 = 540/840 - Subtract the two like fractions:
1470/840 - 540/840 = 1470 - 540/840 = 930/840 - After reducing the fraction, the answer is 31/28
- In mixed form: 13/28
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