Answers

Add 9/84 and 2/40

9/84 + 2/40 is 11/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 84 × 10 = 840,
   9/84 = 9 × 10/84 × 10 = 90/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   2/40 = 2 × 21/40 × 21 = 42/840
4. Add the two like fractions:
   90/840 + 42/840 = 90 + 42/840 = 132/840
5. 132/840 simplified gives 11/70
6. So, 9/84 + 2/40 = 11/70

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