Subtract 40/70 from 50/21
1st number: 2 8/21, 2nd number: 40/70
50/21 - 40/70 is 38/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
50/21 = 50 × 10/21 × 10 = 500/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
40/70 = 40 × 3/70 × 3 = 120/210 - Subtract the two like fractions:
500/210 - 120/210 = 500 - 120/210 = 380/210 - After reducing the fraction, the answer is 38/21
- In mixed form: 117/21
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