Answers

Add 42/35 and 63/80

1^st number: 1 7/35, 2^nd number: 63/80

42/35 + 63/80 is 159/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 35 × 16 = 560,
   42/35 = 42 × 16/35 × 16 = 672/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   63/80 = 63 × 7/80 × 7 = 441/560
4. Add the two like fractions:
   672/560 + 441/560 = 672 + 441/560 = 1113/560
5. 1113/560 simplified gives 159/80
6. So, 42/35 + 63/80 = 159/80
   In mixed form: 179/80

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