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Which of the following describes a correct process for solving the equation 3(x + 6) = 21 and arrives at the correct solution?

A. Divide both sides of the equation by 3, and then subtract 6 from both sides of the equation. The solution is x = 1.

B. Subtract 6 from both sides of the equation, and then divide both sides of the equation by 3. The solution is x = 5.

C. Distribute the 3, subtract 6 from both sides of the equation, and then divide both sides of the equation by 3. The solution is x = 5.

D. Add 6 to both sides of the equation, and then divide both sides of the equation by 3. The solution is x = 9.

2 Answers

3 votes

Answer:

x=1

Explanation:

multiply 3 with (x+6) resulting into 3x+18=21

cross-multiply and divide through by 3.

There u go

User Ophir Radnitz
by
7.7k points
7 votes

Answer:

A. Divide both sides of the equation by 3, and then subtract 6 from both sides of the equation. The solution is x = 1.

Explanation:

3(x + 6) = 21

Divide both sides by 3

(x + 6) = 7

Subtract 6 from each side

x = 7-6

x=1

User Rikard
by
8.0k points

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