Answers

Add 1/90 and 70/50

1^st number: 1/90, 2^nd number: 1 20/50

1/90 + 70/50 is 127/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 50 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 90 × 5 = 450,
   1/90 = 1 × 5/90 × 5 = 5/450
3. Likewise, for the 2nd fraction, since 50 × 9 = 450,
   70/50 = 70 × 9/50 × 9 = 630/450
4. Add the two like fractions:
   5/450 + 630/450 = 5 + 630/450 = 635/450
5. 635/450 simplified gives 127/90
6. So, 1/90 + 70/50 = 127/90
   In mixed form: 137/90

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