Subtract 30/4 from 15/45, Solve 15/45

Subtract 30/4 from 15/45

1^st number: 15/45, 2^nd number: 7 2/4

15/45 - 30/4 is -43/6.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 4 is 180

Next, find the equivalent fraction of both fractional numbers with denominator 180
For the 1st fraction, since 45 × 4 = 180,
15/45 = 15 × 4/45 × 4 = 60/180
Likewise, for the 2nd fraction, since 4 × 45 = 180,
30/4 = 30 × 45/4 × 45 = 1350/180
Subtract the two like fractions:
60/180 - 1350/180 = 60 - 1350/180 = -1290/180
After reducing the fraction, the answer is -43/6

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