Whats the slope of a line with the equation 12x - 8y +7 = 9

Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle