Twice a number decreased by sixteen is twenty-eight
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Twice a number decreased by sixteen is twenty-eight
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The Mathematical phrase "twice a number decreased by sixteen is twenty-eight" translated to an algebraic equation is 2x - 16 = 28. The "x" represents the number, the "decreased by" means that you have to subtract sixteen from twice a number, and the "is" that is means sign of equal.
Finding The Unknown Number In An Algebraic Equation
Going back to the algebraic equation above, 2x - 16 = 28, let us now find the unknown number.
Solution:
Solve for the unknown number.
The number is 22
Checking:
Plug in the number in the algebraic equation to check if the answer is correct.
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↓↓ NOTE: ↓↓
To check a word problem, the solution must be checked in the word statement. The reason for checking in the word statement is that an error may have been made in writing the equation that would not be discovered if you substitute the solution in the equation.