Question
Solve the rational equation. Enter any solution that checks as an integer or reduced fraction. Separate with commas if there is more than one solution. If there are no solutions, click the No Solution button. \( \frac{1}{x+3}+4=\frac{2}{x+3} \) One or more solutions: No solution \( > \) Next Question
Ask by Lyons Christensen. in the United States
Mar 11,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The solution is \( x = -\frac{11}{4} \).
Solution
1. Start with the given equation:
\[
\frac{1}{x+3} + 4 = \frac{2}{x+3}
\]
2. Multiply both sides by \(x+3\) (noting that \(x+3 \neq 0\)) to eliminate the fractions:
\[
(x+3)\left(\frac{1}{x+3} + 4\right) = (x+3)\left(\frac{2}{x+3}\right)
\]
3. Simplify each term:
\[
1 + 4(x+3) = 2
\]
4. Distribute \(4\) in the equation:
\[
1 + 4x + 12 = 2
\]
5. Combine like terms:
\[
4x + 13 = 2
\]
6. Solve for \(x\) by isolating the variable:
\[
4x = 2 - 13
\]
\[
4x = -11
\]
\[
x = -\frac{11}{4}
\]
7. Verify that \(x+3 \neq 0\):
\[
-\frac{11}{4} + 3 = -\frac{11}{4} + \frac{12}{4} = \frac{1}{4} \neq 0
\]
The solution is:
\[
-\frac{11}{4}
\]
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The Deep Dive
To solve the rational equation \( \frac{1}{x+3}+4=\frac{2}{x+3} \), we start by moving all terms involving \(x\) to one side. This leads to \(4 = \frac{2}{x+3} - \frac{1}{x+3}\). Simplifying the right side gives us \(4 = \frac{2 - 1}{x+3} = \frac{1}{x+3}\). Next, we cross-multiply to eliminate the fraction: \(4(x+3) = 1\). Expanding the left side results in \(4x + 12 = 1\). Subtracting 12 from both sides leads to \(4x = -11\), so \(x = -\frac{11}{4}\). Since this is a reduced fraction, the solution is \( -\frac{11}{4} \).