Answers

Add 42/98 and 30/90

42/98 + 30/90 is 16/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 90 is 4410
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4410
2. For the 1st fraction, since 98 × 45 = 4410,
   42/98 = 42 × 45/98 × 45 = 1890/4410
3. Likewise, for the 2nd fraction, since 90 × 49 = 4410,
   30/90 = 30 × 49/90 × 49 = 1470/4410
4. Add the two like fractions:
   1890/4410 + 1470/4410 = 1890 + 1470/4410 = 3360/4410
5. 3360/4410 simplified gives 16/21
6. So, 42/98 + 30/90 = 16/21

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