Answers

Add 42/10 and 9/84

1^st number: 4 2/10, 2^nd number: 9/84

42/10 + 9/84 is 603/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 84 is 420
2. For the 1st fraction, since 10 × 42 = 420,
   42/10 = 42 × 42/10 × 42 = 1764/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   9/84 = 9 × 5/84 × 5 = 45/420
4. Add the two fractions:
   1764/420 + 45/420 = 1764 + 45/420 = 1809/420
5. 1809/420 simplified gives 603/140
6. So, 42/10 + 9/84 = 603/140
   In mixed form: 443/140

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