Answers

Add 40/80 and 90/45

1^st number: 40/80, 2^nd number: 2 0/45

40/80 + 90/45 is 5/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 45 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 80 × 9 = 720,
   40/80 = 40 × 9/80 × 9 = 360/720
3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
   90/45 = 90 × 16/45 × 16 = 1440/720
4. Add the two like fractions:
   360/720 + 1440/720 = 360 + 1440/720 = 1800/720
5. 1800/720 simplified gives 5/2
6. So, 40/80 + 90/45 = 5/2
   In mixed form: 21/2

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