Answers

Add 4/40 and 63/84

4/40 + 63/84 is 17/20.

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,
   4/40 = 4 × 21/40 × 21 = 84/840
3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
   63/84 = 63 × 10/84 × 10 = 630/840
4. Add the two like fractions:
   84/840 + 630/840 = 84 + 630/840 = 714/840
5. 714/840 simplified gives 17/20
6. So, 4/40 + 63/84 = 17/20

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