Math Problem Statement
Felicia has the following system of equations on her math homework. 3x – 5y = 22 y = ‒5x + 32
What is the value of x in the solution to this system of equations?
Group of answer choices
-6.5
0.5
6.5
-0.5
Solution
We are given the following system of equations:
To solve for , we'll substitute the expression for from the second equation into the first equation.
Step 1: Substitute into the first equation:
Step 2: Distribute the -5 across the terms inside the parentheses:
Step 3: Combine like terms:
Step 4: Add 160 to both sides:
Step 5: Solve for by dividing both sides by 28:
Thus, the value of is .
The correct answer is: 6.5
Would you like further details or explanations?
Here are five related questions to deepen your understanding:
- How can you check if your solution is correct by substituting back into both equations?
- What is the value of corresponding to ?
- What is substitution method in solving systems of equations?
- What other methods can be used to solve systems of equations, besides substitution?
- How can you tell if a system of equations has no solution or infinitely many solutions?
Tip: Always double-check your solutions by plugging the values of the variables back into the original equations.
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Math Problem Analysis
Mathematical Concepts
Algebra
Systems of Linear Equations
Substitution Method
Formulas
Substitution method for solving systems of equations
Linear equation in the form y = mx + b
Theorems
Properties of linear equations
Solving systems of equations by substitution
Suitable Grade Level
Grades 8-10
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