Answers

Add 90/21 and 90/48

1^st number: 4 6/21, 2^nd number: 1 42/48

90/21 + 90/48 is 345/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 48 is 336
   
   Next, find the equivalent fraction of both fractional numbers with denominator 336
2. For the 1st fraction, since 21 × 16 = 336,
   90/21 = 90 × 16/21 × 16 = 1440/336
3. Likewise, for the 2nd fraction, since 48 × 7 = 336,
   90/48 = 90 × 7/48 × 7 = 630/336
4. Add the two like fractions:
   1440/336 + 630/336 = 1440 + 630/336 = 2070/336
5. 2070/336 simplified gives 345/56
6. So, 90/21 + 90/48 = 345/56
   In mixed form: 69/56

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