Answers

Add 72/90 and 70/64

1^st number: 72/90, 2^nd number: 1 6/64

72/90 + 70/64 is 303/160.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 64 is 2880
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2880
2. For the 1st fraction, since 90 × 32 = 2880,
   72/90 = 72 × 32/90 × 32 = 2304/2880
3. Likewise, for the 2nd fraction, since 64 × 45 = 2880,
   70/64 = 70 × 45/64 × 45 = 3150/2880
4. Add the two like fractions:
   2304/2880 + 3150/2880 = 2304 + 3150/2880 = 5454/2880
5. 5454/2880 simplified gives 303/160
6. So, 72/90 + 70/64 = 303/160
   In mixed form: 1143/160

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