Subtract 45/30 from 6/28, Solve 6/28

Subtract 45/30 from 6/28

1^st number: 6/28, 2^nd number: 1 15/30

6/28 - 45/30 is -9/7.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 28 × 15 = 420,
6/28 = 6 × 15/28 × 15 = 90/420
Likewise, for the 2nd fraction, since 30 × 14 = 420,
45/30 = 45 × 14/30 × 14 = 630/420
Subtract the two like fractions:
90/420 - 630/420 = 90 - 630/420 = -540/420
After reducing the fraction, the answer is -9/7

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