Answers

Add 21/36 and 42/40

1^st number: 21/36, 2^nd number: 1 2/40

21/36 + 42/40 is 49/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 36 × 10 = 360,
   21/36 = 21 × 10/36 × 10 = 210/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   42/40 = 42 × 9/40 × 9 = 378/360
4. Add the two like fractions:
   210/360 + 378/360 = 210 + 378/360 = 588/360
5. 588/360 simplified gives 49/30
6. So, 21/36 + 42/40 = 49/30
   In mixed form: 119/30

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