Answers

Subtract 90/72 from 84/90

1^st number: 84/90, 2^nd number: 1 18/72

84/90 - 90/72 is -19/60.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 90 × 4 = 360,
   84/90 = 84 × 4/90 × 4 = 336/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   90/72 = 90 × 5/72 × 5 = 450/360
4. Subtract the two like fractions:
   336/360 - 450/360 = 336 - 450/360 = -114/360
5. After reducing the fraction, the answer is -19/60

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