Answers

Add 48/84 and 28/80

48/84 + 28/80 is 129/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 80 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 84 × 20 = 1680,
   48/84 = 48 × 20/84 × 20 = 960/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   28/80 = 28 × 21/80 × 21 = 588/1680
4. Add the two like fractions:
   960/1680 + 588/1680 = 960 + 588/1680 = 1548/1680
5. 1548/1680 simplified gives 129/140
6. So, 48/84 + 28/80 = 129/140

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