5x-20+2= -173
5x-18= -173
5x= -155
x= -31
First, you multiply everything in parentheses by 5 and then add the 2. Next, you subtract 20-2 which will give you -18. Then, you add 18 to both sides which will give you -155. Finally, you divide -155 by 5 to give you a final answer of -31.