Answers

Add 42/21 and 80/10

1^st number: 2 0/21, 2^nd number: 8 0/10

42/21 + 80/10 is 10/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 10 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   42/21 = 42 × 10/21 × 10 = 420/210
3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
   80/10 = 80 × 21/10 × 21 = 1680/210
4. Add the two like fractions:
   420/210 + 1680/210 = 420 + 1680/210 = 2100/210
5. 2100/210 simplified gives 10/1
6. So, 42/21 + 80/10 = 10/1

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