Solve ax−12=9 .(1 point)

Question

Responses

x=21a
x equals Start Fraction 21 over a End Fraction

x=−3a
x equals negative Start Fraction 3 over a End Fraction

x=−21a
x Equals negative Start Fraction 21 over a End Fraction

x=3a

Answer 1

To solve the equation \( ax - 12 = 9 \), we can follow these steps:

1. Add 12 to both sides: \[ ax = 9 + 12 \] \[ ax = 21 \]

2. Divide both sides by \( a \) (assuming \( a \neq 0 \)): \[ x = \frac{21}{a} \]

Thus, the solution is: \[ x = \frac{21}{a} \]

The correct response is: x equals Start Fraction 21 over a End Fraction.