1/2(5x−8)=21 solve for x and brainliest

PLEASE HELP DUE IN 1 HR PLEASE WILL MARK BRAINLEST Help quick!! Plsss:)) 8 less a number is less than or equal to 17 What is this passage mostly about? I HAVE THE PASSAGE PLEASE HELP!!! What is the arithmetic of the following numbers? 3, 5, 6, 7, 9, 6, 8 In what type of organs are the cells that enter meiosis 1 found HURRY HELP I NEED THIS ASAP!!!!! Is 16 a multiple of 8? Why are some members of Congress seeking to impeach president trump? what is distance between C(5,2) and D(0,4) HEY CAN ANYONE PLS ANSWER DIS!!! IN YO OWN WORDS!! Find the geometric mean between 4 and 6. (Always simplify the radical completely.)