Question

What is the value of x in the equation 3x – 1/9y = 18, when y = 27?
A. 5
B. 7
C. 45
D. 63

Answer 1

3x – 1/9y = 18
3x – 1/9(27)= 18
3x - 3 = 18
3x = 21
  x = 7

answer
B. 7 

Answer 2

The answer is x=7, because if you use PEMDAS you will come up with x=7.