Answers

Subtract 40/70 from 20/18

1^st number: 1 2/18, 2^nd number: 40/70

20/18 - 40/70 is 34/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 18 × 35 = 630,
   20/18 = 20 × 35/18 × 35 = 700/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   40/70 = 40 × 9/70 × 9 = 360/630
4. Subtract the two like fractions:
   700/630 - 360/630 = 700 - 360/630 = 340/630
5. After reducing the fraction, the answer is 34/63

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