Why do you get a positive number when multiplying two negatives?

What is the value of x in the equation 6(x + 1) – 5x = 8 + 2(x – 1)?

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120