5 (a) Express as a single fraction, in its simplest form. (i) 3a/4b - a/6b (ii) b^2-9/6 × 2/b-3 (b) Solve 3x = 1-5(x+4). (c) A rectangular card has dimensions (2y) cm by (y + 3) cm. A square of side y cm is cut from this rectangle. The card remaining, shown shaded in the diagram, has an area of 55 cm^2. Form an equation in y and solve it to find the dimensions of the rectangular card. Show all your working.