Answers

Add 21/70 and 60/63

21/70 + 60/63 is 263/210.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 70 × 9 = 630,
   21/70 = 21 × 9/70 × 9 = 189/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   60/63 = 60 × 10/63 × 10 = 600/630
4. Add the two like fractions:
   189/630 + 600/630 = 189 + 600/630 = 789/630
5. 789/630 simplified gives 263/210
6. So, 21/70 + 60/63 = 263/210
   In mixed form: 153/210

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