Math Problem Statement
Solve for x: 7x - y = 14. Which option is correct?
1. x = 7y - 14
2. x = 2/7 + y
3. x = 2 - y/7
4. x = 2 + y/7
Solution
We are given the equation:
We need to solve for .
Step 1: Isolate
Add to both sides of the equation:
Step 2: Solve for
Divide both sides by 7: Simplify:
So, the correct solution is:
This corresponds to the last option in the provided multiple choice answers.
Do you want further details or have any questions?
Here are 5 related questions to deepen your understanding:
- How would the solution change if the equation were ?
- What if the coefficient of was different, such as ?
- Can you solve this for in terms of ?
- How would this method work if the equation was instead?
- What is the graphical representation of this equation?
Tip: Always ensure you isolate the term you are solving for before performing operations such as division.
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Solving for Variables
Formulas
Linear equation: ax + by = c
Isolating variables: ax = c ± by
Theorems
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Suitable Grade Level
Grades 7-9