Subtract 15/10 from 7/72, Solve 7/72

Subtract 15/10 from 7/72

1^st number: 7/72, 2^nd number: 1 5/10

7/72 - 15/10 is -101/72.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 10 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 72 × 5 = 360,
7/72 = 7 × 5/72 × 5 = 35/360
Likewise, for the 2nd fraction, since 10 × 36 = 360,
15/10 = 15 × 36/10 × 36 = 540/360
Subtract the two like fractions:
35/360 - 540/360 = 35 - 540/360 = -505/360
After reducing the fraction, the answer is -101/72

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