Answers

Add 28/40 and 42/35

1^st number: 28/40, 2^nd number: 1 7/35

28/40 + 42/35 is 19/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 35 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   28/40 = 28 × 7/40 × 7 = 196/280
3. Likewise, for the 2nd fraction, since 35 × 8 = 280,
   42/35 = 42 × 8/35 × 8 = 336/280
4. Add the two like fractions:
   196/280 + 336/280 = 196 + 336/280 = 532/280
5. 532/280 simplified gives 19/10
6. So, 28/40 + 42/35 = 19/10
   In mixed form: 19/10

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