Question
Solve Other Linear Equations Quick Check
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Question
Solve ax−12=9 .(1 point)
Responses
x=21a
x equals Start Fraction 21 over a End Fraction
x=3a
x equals Start Fraction 3 over a End Fraction
x=−21a
x Equals negative Start Fraction 21 over a End Fraction
x=−3a
x equals negative Start Fraction 3 over a End Fraction
Answers
GPT-4o mini
To solve the equation \( ax - 12 = 9 \), we can follow these steps:
1. Add 12 to both sides to isolate the term with \( x \):
\[
ax - 12 + 12 = 9 + 12
\]
\[
ax = 21
\]
2. Now, divide both sides by \( a \) to solve for \( x \):
\[
x = \frac{21}{a}
\]
Thus, the correct answer is:
**x equals Start Fraction 21 over a End Fraction**.
1. Add 12 to both sides to isolate the term with \( x \):
\[
ax - 12 + 12 = 9 + 12
\]
\[
ax = 21
\]
2. Now, divide both sides by \( a \) to solve for \( x \):
\[
x = \frac{21}{a}
\]
Thus, the correct answer is:
**x equals Start Fraction 21 over a End Fraction**.