Answers

Add 15/84 and 70/75

15/84 + 70/75 is 467/420.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 75 is 2100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2100
2. For the 1st fraction, since 84 × 25 = 2100,
   15/84 = 15 × 25/84 × 25 = 375/2100
3. Likewise, for the 2nd fraction, since 75 × 28 = 2100,
   70/75 = 70 × 28/75 × 28 = 1960/2100
4. Add the two like fractions:
   375/2100 + 1960/2100 = 375 + 1960/2100 = 2335/2100
5. 2335/2100 simplified gives 467/420
6. So, 15/84 + 70/75 = 467/420
   In mixed form: 147/420

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