Answers

Add 84/20 and 90/56

1^st number: 4 4/20, 2^nd number: 1 34/56

84/20 + 90/56 is 813/140.

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,
   84/20 = 84 × 14/20 × 14 = 1176/280
3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
   90/56 = 90 × 5/56 × 5 = 450/280
4. Add the two like fractions:
   1176/280 + 450/280 = 1176 + 450/280 = 1626/280
5. 1626/280 simplified gives 813/140
6. So, 84/20 + 90/56 = 813/140
   In mixed form: 5113/140

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