Answers

Add 12/63 and 42/45

12/63 + 42/45 is 118/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 45 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 63 × 5 = 315,
   12/63 = 12 × 5/63 × 5 = 60/315
3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
   42/45 = 42 × 7/45 × 7 = 294/315
4. Add the two like fractions:
   60/315 + 294/315 = 60 + 294/315 = 354/315
5. 354/315 simplified gives 118/105
6. So, 12/63 + 42/45 = 118/105
   In mixed form: 113/105

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