Answered

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Nine more than twice a number is 23.​

Sagot :

The Mathematical phrase "nine more than twice a number is 23" translated to an algebraic equation is 9 + 2x = 23. The "x" represents the number, the "more than" means that you have to add twice a number from nine, and the "is" sign of equal.

Finding The Unknown Number In An Algebraic Equation[tex].[/tex]

Going back to the algebraic equation above, 9 + 2x = 23, let us now find the unknown number.

Solution:

Solve for the unknown number.

  • 9 + 2x = 23
  • 2x = 23 - 9
  • 2x = 14
  • 2x/2 = 14/2
  • x = 7

The number is 7

Checking:

Plug in the number in the algebraic equation to check if the answer is correct.

  • 9 + 2x = 23
  • 9 + 2(7) = 23
  • 9 + 14 = 23
  • 23 = 23 ✓