Subtract 70/30 from 4/21
1st number: 4/21, 2nd number: 2 10/30
4/21 - 70/30 is -15/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
4/21 = 4 × 10/21 × 10 = 40/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
70/30 = 70 × 7/30 × 7 = 490/210 - Subtract the two like fractions:
40/210 - 490/210 = 40 - 490/210 = -450/210 - After reducing the fraction, the answer is -15/7
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