Write an algebraic expression for 15 decreased by twice a number.

An algebraic expression is, obviously, an expression with a variable.
"A number" would represent a variable, which, in this case, we'll use y.
So, 15 decreased by twice x. 15 - y x 2 =
I hope this helped :)

Answered by TacoGod | 2024-06-10

15-2x= that would be the algebraic equation. Remember that decrease usually means minus. A number is always represented by a variable, and then anything that by is usually a multiplication or division depending on how its stated.

Answered by moley | 2024-06-24

The algebraic expression for '15 decreased by twice a number' is 15 − 2 x . This expression uses x as the variable representing the unknown number. To evaluate it, simply substitute a value for x .
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Answered by moley | 2024-09-05