Subtract 45/30 from 4/7, Solve 4/7 - 1 15/30 as a fraction

Subtract 45/30 from 4/7

1^st number: 4/7, 2^nd number: 1 15/30

4/7 - 45/30 is -13/14.

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,
4/7 = 4 × 30/7 × 30 = 120/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
45/30 = 45 × 7/30 × 7 = 315/210
Subtract the two like fractions:
120/210 - 315/210 = 120 - 315/210 = -195/210
After reducing the fraction, the answer is -13/14

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