Answers

Add 6/72 and 54/70

6/72 + 54/70 is 359/420.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 70 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 72 × 35 = 2520,
   6/72 = 6 × 35/72 × 35 = 210/2520
3. Likewise, for the 2nd fraction, since 70 × 36 = 2520,
   54/70 = 54 × 36/70 × 36 = 1944/2520
4. Add the two like fractions:
   210/2520 + 1944/2520 = 210 + 1944/2520 = 2154/2520
5. 2154/2520 simplified gives 359/420
6. So, 6/72 + 54/70 = 359/420

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