All real numbers
Work Step by Step
The distributive property allows us to distribute anything multiplied by something inside of the parenthesis to whatever is inside of the parenthesis. Thus, we distribute the 8 to everything inside of the first set of parenthesis and the 4 to everything inside of the second set of parenthesis, giving us the equation 8t+40=8t+40. The same thing is on both sides of the equal sign. This will always be true, so the solution is all real numbers.