Answers

Add 64/10 and 90/72

1^st number: 6 4/10, 2^nd number: 1 18/72

64/10 + 90/72 is 153/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 10 × 36 = 360,
   64/10 = 64 × 36/10 × 36 = 2304/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   90/72 = 90 × 5/72 × 5 = 450/360
4. Add the two like fractions:
   2304/360 + 450/360 = 2304 + 450/360 = 2754/360
5. 2754/360 simplified gives 153/20
6. So, 64/10 + 90/72 = 153/20
   In mixed form: 713/20

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