Answers

Add 28/90 and 70/63

1^st number: 28/90, 2^nd number: 1 7/63

28/90 + 70/63 is 64/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   28/90 = 28 × 7/90 × 7 = 196/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   70/63 = 70 × 10/63 × 10 = 700/630
4. Add the two like fractions:
   196/630 + 700/630 = 196 + 700/630 = 896/630
5. 896/630 simplified gives 64/45
6. So, 28/90 + 70/63 = 64/45
   In mixed form: 119/45

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