Answers

Add 3/70 and 90/72

1^st number: 3/70, 2^nd number: 1 18/72

3/70 + 90/72 is 181/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 72 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 70 × 36 = 2520,
   3/70 = 3 × 36/70 × 36 = 108/2520
3. Likewise, for the 2nd fraction, since 72 × 35 = 2520,
   90/72 = 90 × 35/72 × 35 = 3150/2520
4. Add the two like fractions:
   108/2520 + 3150/2520 = 108 + 3150/2520 = 3258/2520
5. 3258/2520 simplified gives 181/140
6. So, 3/70 + 90/72 = 181/140
   In mixed form: 141/140

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