Answers

Subtract 1/72 from 90/50

1^st number: 1 40/50, 2^nd number: 1/72

90/50 - 1/72 is 643/360.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 72 is 1800
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1800
2. For the 1st fraction, since 50 × 36 = 1800,
   90/50 = 90 × 36/50 × 36 = 3240/1800
3. Likewise, for the 2nd fraction, since 72 × 25 = 1800,
   1/72 = 1 × 25/72 × 25 = 25/1800
4. Subtract the two like fractions:
   3240/1800 - 25/1800 = 3240 - 25/1800 = 3215/1800
5. After reducing the fraction, the answer is 643/360
6. In mixed form: 1283/360

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