Answers

Add 4/84 and 42/60

4/84 + 42/60 is 157/210.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   4/84 = 4 × 5/84 × 5 = 20/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   42/60 = 42 × 7/60 × 7 = 294/420
4. Add the two like fractions:
   20/420 + 294/420 = 20 + 294/420 = 314/420
5. 314/420 simplified gives 157/210
6. So, 4/84 + 42/60 = 157/210

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