Answers

Add 42/40 and 45/84

1^st number: 1 2/40, 2^nd number: 45/84

42/40 + 45/84 is 111/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 84 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   42/40 = 42 × 21/40 × 21 = 882/840
3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
   45/84 = 45 × 10/84 × 10 = 450/840
4. Add the two like fractions:
   882/840 + 450/840 = 882 + 450/840 = 1332/840
5. 1332/840 simplified gives 111/70
6. So, 42/40 + 45/84 = 111/70
   In mixed form: 141/70

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