What is 1/4 x 3/7 plzz

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Multiply and simplify. (x - 4) (x^2 – 5x – 6) i will mark brainliest if your answer is right. show how you got the answer. if your answer is correct but does not show how you got the answer you will not be marked brainliest.

When solving a logarithm equation, how do you find the missing variable ?