Answers

Add 70/40 and 45/90

1^st number: 1 30/40, 2^nd number: 45/90

70/40 + 45/90 is 9/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 90 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   70/40 = 70 × 9/40 × 9 = 630/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   45/90 = 45 × 4/90 × 4 = 180/360
4. Add the two like fractions:
   630/360 + 180/360 = 630 + 180/360 = 810/360
5. 810/360 simplified gives 9/4
6. So, 70/40 + 45/90 = 9/4
   In mixed form: 21/4

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