Question

The perimeter of a rectangle is 40 cm. The length is 14 cm. Let x = width of the rectangle. Ravi says he can find the width using the equation 2(x + 14) = 40. Fran says she can find the width using the equation 2x + 28 = 40. Answer the questions to solve the equations and to compare the steps and solutions. 1. Which of these is the most helpful first step for solving Ravi's equation, 2(x + 14) = 40? Circle the best answer. Add 14 to both sides Subtract 14 from both sides Divide both sides by 2 Multiply both sides by 2

Answer 1

Divide both sides by 2 Step-by-step explanation:We have the equation 2(x + 14) = 40We divide both sides by 22(x + 14) = 40/2x + 14 = 20x = 20 - 14x = 6

Explanation:

Answer 2

Divide both sides by 2

Explanation:

We have the equation

2(x + 14) = 40

We divide both sides by 2

2(x + 14) = 40/2

x + 14 = 20

x = 20 - 14

x = 6

Therefore, the most helpful first step for solving Ravi's equation is: Divide both sides by 2