Solve ax - 9 = 20.

Question

A. x = 11/a
B. x = -29/a
C. x = a/29
D. x = 29/a

Answer 1

To solve the equation \( ax - 9 = 20 \), follow these steps:

1. Add 9 to both sides of the equation: \[ ax - 9 + 9 = 20 + 9 \] which simplifies to: \[ ax = 29 \]

2. Now, divide both sides by \( a \) (assuming \( a \neq 0 \)): \[ x = \frac{29}{a} \]

Thus, the solution is: \[ x = \frac{29}{a} \]

Now, let's compare this with the options given:

A. \( x = \frac{11}{a} \)
B. \( x = \frac{-29}{a} \)
C. \( x = \frac{a}{29} \)
D. \( x = \frac{29}{a} \)

The correct answer is D. \( x = \frac{29}{a} \).