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Questions and Answers
What is the value of x in the equation $2x-1+2x+1=1280$?
What is the value of x in the equation $2x-1+2x+1=1280$?
- x = 320 (correct)
- x = 160
- x = 640
- x = 80
What is the sum of 2x-1 and 2x+1 in the equation $2x-1+2x+1=1280$?
What is the sum of 2x-1 and 2x+1 in the equation $2x-1+2x+1=1280$?
- 4x+2
- 8x
- 4x-2
- 4x (correct)
What is the next step after simplifying $2x-1+2x+1=1280$ to $4x=1280$?
What is the next step after simplifying $2x-1+2x+1=1280$ to $4x=1280$?
- Multiply by 2
- Add 1
- Subtract 1280
- Divide by 4 (correct)
Study Notes
Equations and Variables
- The equation given is 2x - 1 + 2x + 1 = 1280
- The equation is simplified by combining like terms: 2x - 1 + 2x + 1 = 2x + 2x - 1 + 1 = 4x = 1280
- The sum of 2x - 1 and 2x + 1 is 4x
- To solve for x, divide both sides of the equation 4x = 1280 by 4
- The value of x is 1280 / 4 = 320
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Description
"Algebra Equations: Solving for x" - Test your algebra skills by solving for x in the equation 2x-1+2x+1=1280. Practice simplifying expressions and solving for variables in this interactive quiz.
