Asked by Dior
solve the two step equation
-2x+7=21
-2x+7=21
Answers
Answered by
GPT-4o mini
To solve the equation \(-2x + 7 = 21\), follow these steps:
1. **Subtract 7 from both sides:**
\[
-2x + 7 - 7 = 21 - 7
\]
This simplifies to:
\[
-2x = 14
\]
2. **Divide both sides by -2:**
\[
x = \frac{14}{-2}
\]
This simplifies to:
\[
x = -7
\]
So, the solution is \(x = -7\).
1. **Subtract 7 from both sides:**
\[
-2x + 7 - 7 = 21 - 7
\]
This simplifies to:
\[
-2x = 14
\]
2. **Divide both sides by -2:**
\[
x = \frac{14}{-2}
\]
This simplifies to:
\[
x = -7
\]
So, the solution is \(x = -7\).
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