Answers

Add 72/10 and 64/90

1^st number: 7 2/10, 2^nd number: 64/90

72/10 + 64/90 is 356/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 10 × 9 = 90,
   72/10 = 72 × 9/10 × 9 = 648/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   64/90 = 64 × 1/90 × 1 = 64/90
4. Add the two like fractions:
   648/90 + 64/90 = 648 + 64/90 = 712/90
5. 712/90 simplified gives 356/45
6. So, 72/10 + 64/90 = 356/45
   In mixed form: 741/45

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