Subtract 20/70 from 40/15
1st number: 2 10/15, 2nd number: 20/70
40/15 - 20/70 is 50/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
40/15 = 40 × 14/15 × 14 = 560/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
20/70 = 20 × 3/70 × 3 = 60/210 - Subtract the two like fractions:
560/210 - 60/210 = 560 - 60/210 = 500/210 - After reducing the fraction, the answer is 50/21
- In mixed form: 28/21
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