Question

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

5
7
45
63

Answer 1

Hey!
Okay so we first can take out "y" and put in 27 since the question is stating that y=27.
Now we are going to Add 27 to both of the sides to make the problem look like this: 
3x-27+27=18+27
Got it?
Now we have step 2. 
Divide 3 by BOTH sides.

And you get 15, Therefore you have x=15

Answer 2

Answer:

x=15

Step-by-step explanation:

Given: The equation, 3x – y = 18

We need to find the value of x at y=27

So, we put y=27 into the equation and solve for x

3x - 27 = 18

Add 27 both sides (Addition property of equality)

3x -27 + 27 = 27 + 18

              3x = 45

Divide both sides by 3 (Division property of equality)

                x = 15

Hence, The value of x is 15