Subtract 21/70 from 18/8
1st number: 2 2/8, 2nd number: 21/70
18/8 - 21/70 is 39/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 8 × 35 = 280,
18/8 = 18 × 35/8 × 35 = 630/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
21/70 = 21 × 4/70 × 4 = 84/280 - Subtract the two like fractions:
630/280 - 84/280 = 630 - 84/280 = 546/280 - After reducing the fraction, the answer is 39/20
- In mixed form: 119/20
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