Subtract 50/7 from 10/30, Solve 10/30

Subtract 50/7 from 10/30

1^st number: 10/30, 2^nd number: 7 1/7

10/30 - 50/7 is -143/21.

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,
10/30 = 10 × 7/30 × 7 = 70/210
Likewise, for the 2nd fraction, since 7 × 30 = 210,
50/7 = 50 × 30/7 × 30 = 1500/210
Subtract the two like fractions:
70/210 - 1500/210 = 70 - 1500/210 = -1430/210
After reducing the fraction, the answer is -143/21

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