Write an equation and solve for x: Three more than twice x when x=9
1. Write the equation
2. Solve the equation
My answer:
2x + 3 = 9
Would this answer be correct?
Would my answer be this instead:
2x + 3=21
2x + 3
x = 9 (given in the problem)
2(9) + 3 = 21
Yay so I got my second answer right then.
2x + 3=21
Because x=9
Thank you Ms. Sue.
You're welcome, Patrick.
Yes, your equation 2x + 3 = 9 is correct. You correctly translated the phrase "Three more than twice x" into the expression "2x + 3". To solve the equation, you can use inverse operations to isolate x.
Here's the step-by-step solution:
2x + 3 = 9
First, subtract 3 from both sides to remove the constant term:
2x + 3 - 3 = 9 - 3
2x = 6
Next, divide both sides by 2 to isolate x:
2x/2 = 6/2
x = 3
Therefore, the solution to the equation 2x + 3 = 9 when x = 9 is x = 3.