Answers

Add 30/70 and 9/40

30/70 + 9/40 is 183/280.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 70 × 4 = 280,
   30/70 = 30 × 4/70 × 4 = 120/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   9/40 = 9 × 7/40 × 7 = 63/280
4. Add the two like fractions:
   120/280 + 63/280 = 120 + 63/280 = 183/280
5. So, 30/70 + 9/40 = 183/280

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