Answers

Add 56/40 and 75/21

1^st number: 1 16/40, 2^nd number: 3 12/21

56/40 + 75/21 is 174/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 21 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   56/40 = 56 × 21/40 × 21 = 1176/840
3. Likewise, for the 2nd fraction, since 21 × 40 = 840,
   75/21 = 75 × 40/21 × 40 = 3000/840
4. Add the two like fractions:
   1176/840 + 3000/840 = 1176 + 3000/840 = 4176/840
5. 4176/840 simplified gives 174/35
6. So, 56/40 + 75/21 = 174/35
   In mixed form: 434/35

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