Subtract 9/72 from 50/40, Solve 1 10/40

Subtract 9/72 from 50/40

1^st number: 1 10/40, 2^nd number: 9/72

50/40 - 9/72 is 9/8.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 72 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 40 × 9 = 360,
50/40 = 50 × 9/40 × 9 = 450/360
Likewise, for the 2nd fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360
Subtract the two like fractions:
450/360 - 45/360 = 450 - 45/360 = 405/360
After reducing the fraction, the answer is 9/8
In mixed form: 11/8

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