Question

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

Answer 1

Given : Y = 27


3X - Y = 18 ---------(1)




Substitute the value of Y in equation (1) ,


3X - Y = 18



3X - 27 = 18


3X = 45



X = 15

Answer 2

at y=27,
3x - 27 =18
3x = 18 + 27
3x = 45
x = 15.
15 is the right answer.