What is the value of x in the equation 3x - y = 18, when y = 27?
5, 7, 45, 63

Solution:

Given 3x - y = 18 and y = 27

Solve the equation for given y.

Substitute y = 27 in the given equation

We get, 3x - (27) = 18

3x = 18 + 27

3x = 45

x = 45/3 = 15

x = 15

What is the value of x in the equation 3x - y = 18, when y = 27?

Summary:

The value of x in the equation 3x – y = 18, when y = 27 is 15.