Write two numbers, neither of which is 28, whose lcm is 28.

4 and 7

Step-by-step explanation:

The LCM (least common multiple) of two numbers is the smallest number (different from zero) that is a multiple of both.

So, we need to find 2 numbers different from 28 that have 28 as a multiple and it has to be the least one, so this numbers must be smaller than 28.

If we look into all the numbers smaller than 28 that have 28 as a multiple we find: 2, 4, 7 and 14

The only 2 that have the LCM 28 are 4 and 7.

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like:

then