Subtract 75/7 from 10/30, Solve 10/30

Subtract 75/7 from 10/30

1^st number: 10/30, 2^nd number: 10 5/7

10/30 - 75/7 is -218/21.

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,
75/7 = 75 × 30/7 × 30 = 2250/210
Subtract the two like fractions:
70/210 - 2250/210 = 70 - 2250/210 = -2180/210
After reducing the fraction, the answer is -218/21

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