Answers

Add 72/40 and 84/45

1^st number: 1 32/40, 2^nd number: 1 39/45

72/40 + 84/45 is 11/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 45 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   72/40 = 72 × 9/40 × 9 = 648/360
3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
   84/45 = 84 × 8/45 × 8 = 672/360
4. Add the two like fractions:
   648/360 + 672/360 = 648 + 672/360 = 1320/360
5. 1320/360 simplified gives 11/3
6. So, 72/40 + 84/45 = 11/3
   In mixed form: 32/3

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