Intermediate Algebra for College Students (7th Edition)

Algebraic expression translation: $x - (x+4)$ Simplified form: $-4$
Let $x$ = the unknown number The sum of the number and four: $x+4$ A number decreased by the sum of the number and four: $x - (x+4)$ Simplifying gives: $=x-x-4 \\=0x-4 \\=-4$