Answers

Add 30/70 and 90/45

1^st number: 30/70, 2^nd number: 2 0/45

30/70 + 90/45 is 17/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 45 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 70 × 9 = 630,
   30/70 = 30 × 9/70 × 9 = 270/630
3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
   90/45 = 90 × 14/45 × 14 = 1260/630
4. Add the two like fractions:
   270/630 + 1260/630 = 270 + 1260/630 = 1530/630
5. 1530/630 simplified gives 17/7
6. So, 30/70 + 90/45 = 17/7
   In mixed form: 23/7

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