Answers

Add 90/20 and 70/56

1^st number: 4 10/20, 2^nd number: 1 14/56

90/20 + 70/56 is 23/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 56 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 20 × 14 = 280,
   90/20 = 90 × 14/20 × 14 = 1260/280
3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
   70/56 = 70 × 5/56 × 5 = 350/280
4. Add the two like fractions:
   1260/280 + 350/280 = 1260 + 350/280 = 1610/280
5. 1610/280 simplified gives 23/4
6. So, 90/20 + 70/56 = 23/4
   In mixed form: 53/4

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