3675 = 3 x 52 x 72
84 = 22 x 3 x 7
(a) Find the lowest common multiple of 3675 and 84.

14700

Step-by-step explanation:

prime factorization:

3675 = 3 × 5 × 5 × 7 × 7

84 = 2 × 2 × 3 × 7

LCM = 2 × 2 × 3 × 5 × 5 × 7 × 7

LCM = 14700

I believe that the original expression is:
-3+4x = 9

Now, we want to isolate the variable terms. This means that we need to remove the (-3) that is present with the 4x.
To do this, we can simply add (+3) to both sides of the equation as the result on the side of the variable term will be: -3+3+4x = 4x which is the purpose of the isolation.

The new expression will be:
4x = 9+3 = 12

The answe is:
c:3