Answers

Add 56/40 and 15/42

1^st number: 1 16/40, 2^nd number: 15/42

56/40 + 15/42 is 123/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 42 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 42 × 20 = 840,
   15/42 = 15 × 20/42 × 20 = 300/840
4. Add the two like fractions:
   1176/840 + 300/840 = 1176 + 300/840 = 1476/840
5. 1476/840 simplified gives 123/70
6. So, 56/40 + 15/42 = 123/70
   In mixed form: 153/70

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