Solve for x.
9x+9x-21=33
(1 point)
A. x=6
B. x=3
C. x=8
D. x=1
To solve for x in the equation 9x + 9x - 21 = 33, we need to combine like terms and isolate the variable.
First, combine the terms on the left side of the equation:
18x - 21 = 33
Next, add 21 to both sides of the equation to eliminate the constant term on the left side:
18x - 21 + 21 = 33 + 21
18x = 54
Finally, divide both sides of the equation by 18 to solve for x:
18x/18 = 54/18
x = 3
Therefore, the correct answer is B. x = 3.