What is the value of this equation 14x-2(3x-1)=18

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Fill in the blank 1. a rhombus is a rectangle a) always b) sometimes c) never 2. a square is a quadrilateral a) always b) sometimes c) never 3. a trapezoid is a kite a) always b) sometimes c) never 4. a quadrilateral is a kite a) always b) sometimes c) never 5. a square is a rhombus a) always b) sometimes c) never 6. a parallelogram is a rectangle a) always b) sometimes c) never

Which shows how to solve the equation 3/4x=6 for x in one step?