Write an equation that has variables on both sides and has a solution of -3.

x = 3x+6

2x + 1 = x - 2

or
10 - √(6 - x) = 2x - 1
or
....

To write an equation with variables on both sides and a solution of -3, you can follow these steps:

Step 1: Begin by setting up the equation by assigning variables to each side. Let's use "x" and "y" for the variables.

x + y = -3

Step 2: Rearrange the equation so that the variables are on one side and the constant (-3) is on the other side.

x = -y - 3

This equation has variables on both sides and a solution of -3.