Answers

Subtract 70/40 from 4/90

1^st number: 4/90, 2^nd number: 1 30/40

4/90 - 70/40 is -307/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 90 × 4 = 360,
   4/90 = 4 × 4/90 × 4 = 16/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   70/40 = 70 × 9/40 × 9 = 630/360
4. Subtract the two like fractions:
   16/360 - 630/360 = 16 - 630/360 = -614/360
5. After reducing the fraction, the answer is -307/180

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