Answers

Add 45/90 and 90/70

1^st number: 45/90, 2^nd number: 1 20/70

45/90 + 90/70 is 25/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   45/90 = 45 × 7/90 × 7 = 315/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   90/70 = 90 × 9/70 × 9 = 810/630
4. Add the two like fractions:
   315/630 + 810/630 = 315 + 810/630 = 1125/630
5. 1125/630 simplified gives 25/14
6. So, 45/90 + 90/70 = 25/14
   In mixed form: 111/14

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