Algebraic expression

Question

A number decreased by eight

Answer 1

Answer : x - 8

Explanation: "a number" "decreased by" "eight"

We can assign a value or symbol to each phrase and that gives us an algebraic expression. Usually "a number" will represent "x" and that would imply the number could be any number without restrictions. When we refer to "decreased" and any synonym of the word it means to subtract and of course eight would represent itself.