Answers

Subtract 18/24 from 90/70

1^st number: 1 20/70, 2^nd number: 18/24

90/70 - 18/24 is 15/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 24 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 70 × 12 = 840,
   90/70 = 90 × 12/70 × 12 = 1080/840
3. Likewise, for the 2nd fraction, since 24 × 35 = 840,
   18/24 = 18 × 35/24 × 35 = 630/840
4. Subtract the two like fractions:
   1080/840 - 630/840 = 1080 - 630/840 = 450/840
5. After reducing the fraction, the answer is 15/28

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