Answers

Add 90/84 and 45/16

1^st number: 1 6/84, 2^nd number: 2 13/16

90/84 + 45/16 is 435/112.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 16 is 336
   
   Next, find the equivalent fraction of both fractional numbers with denominator 336
2. For the 1st fraction, since 84 × 4 = 336,
   90/84 = 90 × 4/84 × 4 = 360/336
3. Likewise, for the 2nd fraction, since 16 × 21 = 336,
   45/16 = 45 × 21/16 × 21 = 945/336
4. Add the two like fractions:
   360/336 + 945/336 = 360 + 945/336 = 1305/336
5. 1305/336 simplified gives 435/112
6. So, 90/84 + 45/16 = 435/112
   In mixed form: 399/112

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