Subtract 15/70 from 18/4
1st number: 4 2/4, 2nd number: 15/70
18/4 - 15/70 is 30/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
18/4 = 18 × 35/4 × 35 = 630/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
15/70 = 15 × 2/70 × 2 = 30/140 - Subtract the two like fractions:
630/140 - 30/140 = 630 - 30/140 = 600/140 - After reducing the fraction, the answer is 30/7
- In mixed form: 42/7
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