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Least common multiple is the smallest multiple between a pair of numbers.
Multiples of 4 are 4,8,12,16 Multiples of 2 are 2,4,6,8,10 LCM=4
Least common denominator is found by making the bottom number of a pair of fractions the same by finding the least common multiple.
1/4+3/8=
Multiples of 4 are 4,8,12,16...
Multiples of 8 are 8,16,24,32...
The least common multiple is 8
Next you have to figure out how many times 4 goes into 8 which would be 2 times. Now you must multiply 1/8 x 2/1 to get 2/8 now you can add 2/8 and 3/8 to solve the example.
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