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Samantha solved an equation, as shown below:

Step 1: 15r = 105
Step 2: r = 105 - 15
Step 3: r =90

Part A: Is Samantha's answer correct or incorrect? If it is incorrect, explain why it is incorrect and show the correct steps to solve the equation. (6 points)

Part B: How many solutions does this equation have? (4 points)

Respuesta :

devishri1977

Answer:

Step-by-step explanation:

A) Samantha's answer is incorrect because 15r ----> 15*r. So when 15 goes to other side, multiplication will change to division (not subtraction)

15r = 105

divide both sides by 15

[tex]\frac{15r}{15}=\frac{105}{15}\\\\r=7[/tex]

B)This equation has only one solution.

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