Subtract 27/7 from 40/30, Solve 1 10/30

Subtract 27/7 from 40/30

1^st number: 1 10/30, 2^nd number: 3 6/7

40/30 - 27/7 is -53/21.

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,
40/30 = 40 × 7/30 × 7 = 280/210
Likewise, for the 2nd fraction, since 7 × 30 = 210,
27/7 = 27 × 30/7 × 30 = 810/210
Subtract the two like fractions:
280/210 - 810/210 = 280 - 810/210 = -530/210
After reducing the fraction, the answer is -53/21

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