Add 28/3 and 40/7
1st number: 9 1/3, 2nd number: 5 5/7
28/3 + 40/7 is 316/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
28/3 = 28 × 7/3 × 7 = 196/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
40/7 = 40 × 3/7 × 3 = 120/21 - Add the two like fractions:
196/21 + 120/21 = 196 + 120/21 = 316/21 - So, 28/3 + 40/7 = 316/21
In mixed form: 151/21
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