Subtract 40/70 from 42/2
1st number: 21 0/2, 2nd number: 40/70
42/2 - 40/70 is 143/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 2 × 35 = 70,
42/2 = 42 × 35/2 × 35 = 1470/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
40/70 = 40 × 1/70 × 1 = 40/70 - Subtract the two like fractions:
1470/70 - 40/70 = 1470 - 40/70 = 1430/70 - After reducing the fraction, the answer is 143/7
- In mixed form: 203/7
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