What is an equation where a number is added to a variable and the solution is -8

Question

Write an equation where a number is added to a variable and the solution is -8

Answer 1

x + y = -8

although generally x, y , and z are variables

and a constant is a, b or c

so if "a number" is a constant then the equation

would be a+ y = -8

or y = -a-8