5+ 7g = 3g + 9

find the value of g?

6x - 8 = 16 solve the following equation. then place the correct number in the box provided.

Solve the system of equations. y= 2x y= x^2 - 15

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.