Answers

Add 24/63 and 40/70

24/63 + 40/70 is 20/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   24/63 = 24 × 10/63 × 10 = 240/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   40/70 = 40 × 9/70 × 9 = 360/630
4. Add the two like fractions:
   240/630 + 360/630 = 240 + 360/630 = 600/630
5. 600/630 simplified gives 20/21
6. So, 24/63 + 40/70 = 20/21

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