Question
Solve for \( y \) \[ \frac{4}{y+4}=\frac{8}{2 y+8}-3 \]
Ask by Wells Kelley. in the United States
Mar 21,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
There are no real solutions for \( y \).
Solution
Solve the equation \( \frac{4}{y+4}=\frac{8}{2y+8}-3 \).
Solve the equation by following steps:
- step0: Solve for \(y\):
\(\frac{4}{y+4}=\frac{8}{2y+8}-3\)
- step1: Find the domain:
\(\frac{4}{y+4}=\frac{8}{2y+8}-3,y\neq -4\)
- step2: Divide the terms:
\(\frac{4}{y+4}=\frac{4}{y+4}-3\)
- step3: Multiply both sides of the equation by LCD:
\(\frac{4}{y+4}\times \left(y+4\right)=\left(\frac{4}{y+4}-3\right)\left(y+4\right)\)
- step4: Simplify the equation:
\(4=-8-3y\)
- step5: Swap the sides:
\(-8-3y=4\)
- step6: Move the constant to the right side:
\(-3y=4+8\)
- step7: Add the numbers:
\(-3y=12\)
- step8: Change the signs:
\(3y=-12\)
- step9: Divide both sides:
\(\frac{3y}{3}=\frac{-12}{3}\)
- step10: Divide the numbers:
\(y=-4\)
- step11: Check if the solution is in the defined range:
\(y=-4,y\neq -4\)
- step12: Find the intersection:
\(y \in \varnothing \)
The solution to the equation \( \frac{4}{y+4}=\frac{8}{2y+8}-3 \) is that there are no real solutions for \( y \).
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Bonus Knowledge
To solve for \( y \), we start with the equation: \[ \frac{4}{y+4} = \frac{8}{2y+8} - 3 \] First, simplify \( \frac{8}{2y+8} \): \[ \frac{8}{2y+8} = \frac{8}{2(y+4)} = \frac{4}{y+4} \] So the equation becomes: \[ \frac{4}{y+4} = \frac{4}{y+4} - 3 \] Now, we can eliminate \( \frac{4}{y+4} \) from both sides: \[ 0 = -3 \] This is a contradiction, meaning our equation has no solutions. Thus, the final answer is: \[ \text{No solution} \]