Answers

Add 90/54 and 40/7

1^st number: 1 36/54, 2^nd number: 5 5/7

90/54 + 40/7 is 155/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 7 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 54 × 7 = 378,
   90/54 = 90 × 7/54 × 7 = 630/378
3. Likewise, for the 2nd fraction, since 7 × 54 = 378,
   40/7 = 40 × 54/7 × 54 = 2160/378
4. Add the two like fractions:
   630/378 + 2160/378 = 630 + 2160/378 = 2790/378
5. 2790/378 simplified gives 155/21
6. So, 90/54 + 40/7 = 155/21
   In mixed form: 78/21

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