Answers

Add 8/42 and 56/90

8/42 + 56/90 is 256/315.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 42 × 15 = 630,
   8/42 = 8 × 15/42 × 15 = 120/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   56/90 = 56 × 7/90 × 7 = 392/630
4. Add the two like fractions:
   120/630 + 392/630 = 120 + 392/630 = 512/630
5. 512/630 simplified gives 256/315
6. So, 8/42 + 56/90 = 256/315

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