What is the sum of -2/6 and 3/2

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

What does x = in this equation x+3+2x=x+5

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.