I why is 1/3 divided into 7 equal parts please help FAST I’m doing my homework at 2:am right now

What is the value of x? 3x + (6x - 6) = 4(2x-2)

What should be done to solve the equation? x+14=21 add 14 to both sides of the equation. subtract 14 from the left side of the equation. add 14 to the left side and subtract 14 from the right side of the equation. subtract 14 from both sides of the equation.

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9