Chapter 2: Q7. (page 93)

Twelve decreased by twice a number equals $- 34$ . Write an equation for this situation and then find the number.

Short Answer

Expert verified

The equation of a given situation is $2 x - 12 = - 34$ .

The solution of the equation $x = - 11$ .

Step by step solution

Step 1. Make the equation.

Twelve decreased by twice a number is $- 34$ .

Let the number be x .

The equation is $2 x - 12 = - 34$

Step 2. Isolate the variable.

$\begin{array}{l} 2 x - 12 = - 34 \\ 2 x = - 34 + 12 \\ 2 x = - 22 \end{array}$

Step 3. Find the value of x from the equation.

$\begin{array}{l} x = \frac{- 22}{2} \\ x = - 11 \end{array}$

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Twelve decreased by twice a number equals $- 34$ . Write an equation for this situation and then find the number.

Short Answer

Step by step solution

Step 1. Make the equation.

Step 2. Isolate the variable.

Step 3. Find the value of x from the equation.

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Twelve decreased by twice a number equals -34. Write an equation for this situation and then find the number.

Short Answer

Step by step solution

Step 1. Make the equation.

Step 2. Isolate the variable.

Step 3. Find the value of x from the equation.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Theoretical and Mathematical Physics

Decision Maths

Probability and Statistics

Logic and Functions

Pure Maths

Statistics

Study anywhere. Anytime. Across all devices.

Twelve decreased by twice a number equals $- 34$ . Write an equation for this situation and then find the number.