What is -6x - x 10 15 -7x - 5?

To simplify the expression (-6x - x + 10 + 15 - 7x - 5), first combine the like terms. The (x) terms are (-6x - x - 7x = -14x), and the constant terms are (10 + 15 - 5 = 20). Thus, the simplified expression is (-14x + 20).