Answers

Add 48/40 and 45/90

1^st number: 1 8/40, 2^nd number: 45/90

48/40 + 45/90 is 17/10.

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,
   48/40 = 48 × 9/40 × 9 = 432/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   45/90 = 45 × 4/90 × 4 = 180/360
4. Add the two like fractions:
   432/360 + 180/360 = 432 + 180/360 = 612/360
5. 612/360 simplified gives 17/10
6. So, 48/40 + 45/90 = 17/10
   In mixed form: 17/10

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