Answers

Add 90/20 and 48/40

1^st number: 4 10/20, 2^nd number: 1 8/40

90/20 + 48/40 is 57/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 40 is 40
   
   Next, find the equivalent fraction of both fractional numbers with denominator 40
2. For the 1st fraction, since 20 × 2 = 40,
   90/20 = 90 × 2/20 × 2 = 180/40
3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
   48/40 = 48 × 1/40 × 1 = 48/40
4. Add the two like fractions:
   180/40 + 48/40 = 180 + 48/40 = 228/40
5. 228/40 simplified gives 57/10
6. So, 90/20 + 48/40 = 57/10
   In mixed form: 57/10

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