Answers

Add 20/21 and 56/70

20/21 + 56/70 is 184/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 70 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   20/21 = 20 × 10/21 × 10 = 200/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   56/70 = 56 × 3/70 × 3 = 168/210
4. Add the two like fractions:
   200/210 + 168/210 = 200 + 168/210 = 368/210
5. 368/210 simplified gives 184/105
6. So, 20/21 + 56/70 = 184/105
   In mixed form: 179/105

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