Answer :
Sure, let's solve the equation step-by-step to find which value of [tex]\( x \)[/tex] makes the equation [tex]\( x + 7 = -9 \)[/tex] true.
1. Start with the given equation:
[tex]\[
x + 7 = -9
\][/tex]
2. To isolate [tex]\( x \)[/tex], you need to get rid of the [tex]\( +7 \)[/tex]. You can do this by subtracting 7 from both sides of the equation:
[tex]\[
x + 7 - 7 = -9 - 7
\][/tex]
3. Simplify both sides:
[tex]\[
x = -16
\][/tex]
So, the value of [tex]\( x \)[/tex] that makes the equation true is [tex]\(-16\)[/tex].
Therefore, the correct answer is:
A. -16
1. Start with the given equation:
[tex]\[
x + 7 = -9
\][/tex]
2. To isolate [tex]\( x \)[/tex], you need to get rid of the [tex]\( +7 \)[/tex]. You can do this by subtracting 7 from both sides of the equation:
[tex]\[
x + 7 - 7 = -9 - 7
\][/tex]
3. Simplify both sides:
[tex]\[
x = -16
\][/tex]
So, the value of [tex]\( x \)[/tex] that makes the equation true is [tex]\(-16\)[/tex].
Therefore, the correct answer is:
A. -16
