Answers

Add 80/49 and 42/90

1^st number: 1 31/49, 2^nd number: 42/90

80/49 + 42/90 is 1543/735.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 90 is 4410
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4410
2. For the 1st fraction, since 49 × 90 = 4410,
   80/49 = 80 × 90/49 × 90 = 7200/4410
3. Likewise, for the 2nd fraction, since 90 × 49 = 4410,
   42/90 = 42 × 49/90 × 49 = 2058/4410
4. Add the two like fractions:
   7200/4410 + 2058/4410 = 7200 + 2058/4410 = 9258/4410
5. 9258/4410 simplified gives 1543/735
6. So, 80/49 + 42/90 = 1543/735
   In mixed form: 273/735

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