Answers

Subtract 40/7 from 90/5

1^st number: 18 0/5, 2^nd number: 5 5/7

90/5 - 40/7 is 86/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 7 is 35
   
   Next, find the equivalent fraction of both fractional numbers with denominator 35
2. For the 1st fraction, since 5 × 7 = 35,
   90/5 = 90 × 7/5 × 7 = 630/35
3. Likewise, for the 2nd fraction, since 7 × 5 = 35,
   40/7 = 40 × 5/7 × 5 = 200/35
4. Subtract the two like fractions:
   630/35 - 200/35 = 630 - 200/35 = 430/35
5. After reducing the fraction, the answer is 86/7
6. In mixed form: 122/7

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