Math Problem Statement

Solve for perimeter by adding up all the sides and solve for x

Solve for perimeter by adding up all the sides and solve for x

Solution

To find the perimeter of this rectangle, we will sum up all the sides.

From the image:

  • One pair of opposite sides is labeled as 5x155x - 15 and 2x32x - 3,
  • The other pair is labeled as x1x - 1 (opposite sides of a rectangle are equal).

Step 1: Express the perimeter

The perimeter PP of a rectangle is calculated by adding all sides or using the formula:

P=2(length+width)P = 2(\text{length} + \text{width})

From the image, the lengths and widths are:

  • Two lengths: 5x155x - 15 and 2x32x - 3
  • Two widths: x1x - 1 (repeated on both sides)

Thus, the perimeter is:

P=2((5x15)+(x1))P = 2\left((5x - 15) + (x - 1)\right)

Step 2: Simplify the expression for the perimeter

First, combine the terms inside the parentheses:

P=2((5x15)+(x1))P = 2\left((5x - 15) + (x - 1)\right) P=2(5x+x151)P = 2\left(5x + x - 15 - 1\right) P=2(6x16)P = 2\left(6x - 16\right)

Now, distribute the 2:

P=12x32P = 12x - 32

Step 3: Solve for xx

If there is a specific value for the perimeter provided (such as a numerical value), we could solve for xx. However, the image does not specify a perimeter value. If you have this value, you can set the equation equal to that number and solve for xx.

Would you like to provide a specific perimeter or clarify any other details?

Related Questions:

  1. How would the equation change if the rectangle was a square?
  2. What happens to the perimeter when xx is a negative number?
  3. Can you solve for xx if the area of the rectangle is given?
  4. How does the perimeter change as xx increases?
  5. What is the difference between finding the perimeter and finding the area in this case?

Tip:

When solving for variables in expressions involving perimeter or area, always combine like terms carefully before substituting or simplifying further.

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Math Problem Analysis

Mathematical Concepts

Algebra
Geometry
Perimeter of a Rectangle
Solving Linear Equations

Formulas

Perimeter of a rectangle: P = 2(length + width)
Simplifying algebraic expressions

Theorems

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Suitable Grade Level

Grades 7-9