Answers

Add 90/54 and 42/63

1^st number: 1 36/54, 2^nd number: 42/63

90/54 + 42/63 is 7/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 63 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 63 × 6 = 378,
   42/63 = 42 × 6/63 × 6 = 252/378
4. Add the two like fractions:
   630/378 + 252/378 = 630 + 252/378 = 882/378
5. 882/378 simplified gives 7/3
6. So, 90/54 + 42/63 = 7/3
   In mixed form: 21/3

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