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:

7xy=147x - y = 14

We need to solve for xx.

Step 1: Isolate 7x7x

Add yy to both sides of the equation: 7x=y+147x = y + 14

Step 2: Solve for xx

Divide both sides by 7: x=y+147x = \frac{y + 14}{7} Simplify: x=y7+2x = \frac{y}{7} + 2

So, the correct solution is:

x=2+y7x = 2 + \frac{y}{7}

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:

  1. How would the solution change if the equation were 7xy=207x - y = 20?
  2. What if the coefficient of xx was different, such as 6xy=146x - y = 14?
  3. Can you solve this for yy in terms of xx?
  4. How would this method work if the equation was 7x+y=147x + y = 14 instead?
  5. 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.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Solving for Variables

Formulas

Linear equation: ax + by = c
Isolating variables: ax = c ± by

Theorems

-

Suitable Grade Level

Grades 7-9