Subtract 15/72 from 40/30, Solve 1 10/30

Subtract 15/72 from 40/30

1^st number: 1 10/30, 2^nd number: 15/72

40/30 - 15/72 is 9/8.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 30 × 12 = 360,
40/30 = 40 × 12/30 × 12 = 480/360
Likewise, for the 2nd fraction, since 72 × 5 = 360,
15/72 = 15 × 5/72 × 5 = 75/360
Subtract the two like fractions:
480/360 - 75/360 = 480 - 75/360 = 405/360
After reducing the fraction, the answer is 9/8
In mixed form: 11/8

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