Subtract 45/30 from 1/7, Solve 1/7 - 1 15/30 as a fraction

Subtract 45/30 from 1/7

1^st number: 1/7, 2^nd number: 1 15/30

1/7 - 45/30 is -19/14.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 7 × 30 = 210,
1/7 = 1 × 30/7 × 30 = 30/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
45/30 = 45 × 7/30 × 7 = 315/210
Subtract the two like fractions:
30/210 - 315/210 = 30 - 315/210 = -285/210
After reducing the fraction, the answer is -19/14

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