Answers

Add 4/72 and 45/70

4/72 + 45/70 is 44/63.

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,
   4/72 = 4 × 35/72 × 35 = 140/2520
3. Likewise, for the 2nd fraction, since 70 × 36 = 2520,
   45/70 = 45 × 36/70 × 36 = 1620/2520
4. Add the two like fractions:
   140/2520 + 1620/2520 = 140 + 1620/2520 = 1760/2520
5. 1760/2520 simplified gives 44/63
6. So, 4/72 + 45/70 = 44/63

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