Question
\( \begin{array}{l}y=5 x-3 \\ x=y-5 \longrightarrow x=5 x-3-5 \\ \text { (1)) What is one way you can use substitution to solve this problem? } \\ \text { (1)) Substitute } 5 x-3 \text { for } y \\ \text { (1) Now, find the solution to the system of equations, } \\ (\square, \square)\end{array} \) ?
Ask by Bolton Malone. in the United States
Jan 24,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
The solution to the system of equations is \( (2, 7) \).
Solution
To solve the system of equations using substitution, we will follow these steps:
1. **Identify the equations:**
We have the following two equations:
\[
y = 5x - 3 \quad (1)
\]
\[
x = y - 5 \quad (2)
\]
2. **Substitute \(y\) from equation (1) into equation (2):**
We will substitute \(y\) in equation (2) with the expression from equation (1):
\[
x = (5x - 3) - 5
\]
3. **Simplify the equation:**
Now, we simplify the equation:
\[
x = 5x - 3 - 5
\]
\[
x = 5x - 8
\]
4. **Rearrange the equation:**
To isolate \(x\), we can rearrange the equation:
\[
x - 5x = -8
\]
\[
-4x = -8
\]
\[
x = 2
\]
5. **Substitute \(x\) back to find \(y\):**
Now that we have \(x\), we can substitute it back into equation (1) to find \(y\):
\[
y = 5(2) - 3
\]
\[
y = 10 - 3
\]
\[
y = 7
\]
6. **Final solution:**
The solution to the system of equations is:
\[
(x, y) = (2, 7)
\]
Thus, the final answer is \((2, 7)\).
Reviewed and approved by the UpStudy tutoring team
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Mind Expander
To use substitution to solve the system of equations, start by substituting \(y\) in the second equation with \(5x - 3\). This gives you the equation \(x = (5x - 3) - 5\). Simplifying this equation leads to \(x = 5x - 8\), allowing you to rearrange and solve for \(x\) to find its value. After simplifying the equation to find \(x\), you can substitute this value back into the first equation \(y = 5x - 3\) to find the corresponding value of \(y\). For instance, if you find \(x = 1\), substituting gives \(y = 5(1) - 3 = 2\). Thus, your solution to the system is \((1, 2)\).