Answers

Add 70/80 and 72/45

1^st number: 70/80, 2^nd number: 1 27/45

70/80 + 72/45 is 99/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 45 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 80 × 9 = 720,
   70/80 = 70 × 9/80 × 9 = 630/720
3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
   72/45 = 72 × 16/45 × 16 = 1152/720
4. Add the two like fractions:
   630/720 + 1152/720 = 630 + 1152/720 = 1782/720
5. 1782/720 simplified gives 99/40
6. So, 70/80 + 72/45 = 99/40
   In mixed form: 219/40

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