Add 30/18 and 40/84
1st number: 1 12/18, 2nd number: 40/84
30/18 + 40/84 is 15/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
30/18 = 30 × 14/18 × 14 = 420/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
40/84 = 40 × 3/84 × 3 = 120/252 - Add the two like fractions:
420/252 + 120/252 = 420 + 120/252 = 540/252 - 540/252 simplified gives 15/7
- So, 30/18 + 40/84 = 15/7
In mixed form: 21/7
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