Cary calculated the surface area of a box in the shape of a rectangular prism. She wrote the equation 148 = 2 (6w 6h hw) to represent the width and height of the box. She solved for w and got w = StartFraction 74 minus 6 h Over h 6 EndFraction Which of the following is an equivalent equation? w = StartFraction 148 minus 6 h Over 12 h EndFraction w = StartFraction 148 minus 12 h Over 12 2 h EndFraction w = 136 minus 14 h w = 136 minus 10 h.