Answers

Add 90/12 and 45/72

1^st number: 7 6/12, 2^nd number: 45/72

90/12 + 45/72 is 65/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 72 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 12 × 6 = 72,
   90/12 = 90 × 6/12 × 6 = 540/72
3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
   45/72 = 45 × 1/72 × 1 = 45/72
4. Add the two like fractions:
   540/72 + 45/72 = 540 + 45/72 = 585/72
5. 585/72 simplified gives 65/8
6. So, 90/12 + 45/72 = 65/8
   In mixed form: 81/8

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