Answers

Add 70/45 and 21/70

1^st number: 1 25/45, 2^nd number: 21/70

70/45 + 21/70 is 167/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 45 × 14 = 630,
   70/45 = 70 × 14/45 × 14 = 980/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   21/70 = 21 × 9/70 × 9 = 189/630
4. Add the two like fractions:
   980/630 + 189/630 = 980 + 189/630 = 1169/630
5. 1169/630 simplified gives 167/90
6. So, 70/45 + 21/70 = 167/90
   In mixed form: 177/90

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