Answers

Add 72/70 and 90/8

1^st number: 1 2/70, 2^nd number: 11 2/8

72/70 + 90/8 is 1719/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 8 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 70 × 4 = 280,
   72/70 = 72 × 4/70 × 4 = 288/280
3. Likewise, for the 2nd fraction, since 8 × 35 = 280,
   90/8 = 90 × 35/8 × 35 = 3150/280
4. Add the two like fractions:
   288/280 + 3150/280 = 288 + 3150/280 = 3438/280
5. 3438/280 simplified gives 1719/140
6. So, 72/70 + 90/8 = 1719/140
   In mixed form: 1239/140

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