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 ✓