Subtract 70/45 from 42/18
1st number: 2 6/18, 2nd number: 1 25/45
42/18 - 70/45 is 7/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
42/18 = 42 × 5/18 × 5 = 210/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
70/45 = 70 × 2/45 × 2 = 140/90 - Subtract the two like fractions:
210/90 - 140/90 = 210 - 140/90 = 70/90 - After reducing the fraction, the answer is 7/9
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