Answers

Add 70/16 and 40/90

1^st number: 4 6/16, 2^nd number: 40/90

70/16 + 40/90 is 347/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 90 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 16 × 45 = 720,
   70/16 = 70 × 45/16 × 45 = 3150/720
3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
   40/90 = 40 × 8/90 × 8 = 320/720
4. Add the two like fractions:
   3150/720 + 320/720 = 3150 + 320/720 = 3470/720
5. 3470/720 simplified gives 347/72
6. So, 70/16 + 40/90 = 347/72
   In mixed form: 459/72

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