Answers

Add 63/40 and 42/70

1^st number: 1 23/40, 2^nd number: 42/70

63/40 + 42/70 is 87/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 70 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 70 × 4 = 280,
   42/70 = 42 × 4/70 × 4 = 168/280
4. Add the two like fractions:
   441/280 + 168/280 = 441 + 168/280 = 609/280
5. 609/280 simplified gives 87/40
6. So, 63/40 + 42/70 = 87/40
   In mixed form: 27/40

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