Answers

Add 90/12 and 40/63

1^st number: 7 6/12, 2^nd number: 40/63

90/12 + 40/63 is 1025/126.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 12 × 21 = 252,
   90/12 = 90 × 21/12 × 21 = 1890/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   40/63 = 40 × 4/63 × 4 = 160/252
4. Add the two like fractions:
   1890/252 + 160/252 = 1890 + 160/252 = 2050/252
5. 2050/252 simplified gives 1025/126
6. So, 90/12 + 40/63 = 1025/126
   In mixed form: 817/126

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