This is a simple multiplication, written in a strange form. 5(t+2) means 5 x t + 5 x 2 which simplifies to: 5t + 10 If it's equal to a number, 0 for example, then with a little rearranging we can find what t is. 5t + 10 = 0, 5t = -10 t = -2 If it's not equal to something, the answer is just 5t + 10.
