Question

What is the value of x in the equation 3x - 1/9y = 18, when y = 27?

O 5
07
O 45
63

Answer 1

7.

Explanation:

plug 27 in as y as y = 27.

3x - 1/9(27) = 18

3x + -3 = 18

add 3 on both sides

3x -3 + 3 = 18 + 3

3x = 21

x = 7