Answers

Subtract 84/7 from 63/40

1^st number: 1 23/40, 2^nd number: 12 0/7

63/40 - 84/7 is -417/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 7 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   63/40 = 63 × 7/40 × 7 = 441/280
3. Likewise, for the 2nd fraction, since 7 × 40 = 280,
   84/7 = 84 × 40/7 × 40 = 3360/280
4. Subtract the two like fractions:
   441/280 - 3360/280 = 441 - 3360/280 = -2919/280
5. After reducing the fraction, the answer is -417/40

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