Answers

Add 42/90 and 63/40

1^st number: 42/90, 2^nd number: 1 23/40

42/90 + 63/40 is 49/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 90 × 4 = 360,
   42/90 = 42 × 4/90 × 4 = 168/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   63/40 = 63 × 9/40 × 9 = 567/360
4. Add the two like fractions:
   168/360 + 567/360 = 168 + 567/360 = 735/360
5. 735/360 simplified gives 49/24
6. So, 42/90 + 63/40 = 49/24
   In mixed form: 21/24

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