Subtract 30/7 from 50/30
1st number: 1 20/30, 2nd number: 4 2/7
50/30 - 30/7 is -55/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
50/30 = 50 × 7/30 × 7 = 350/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
30/7 = 30 × 30/7 × 30 = 900/210 - Subtract the two like fractions:
350/210 - 900/210 = 350 - 900/210 = -550/210 - After reducing the fraction, the answer is -55/21
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