5 (a) Express as a single fraction in its simplest form 4/x-2 - 5/x+1. (b) Solve 2x(x + 1) = 3(4 - x) . (c) Anil and Yasmin buy some pens and notebooks from the same shop. Anil buys 3 pens and 2 notebooks for $4.80 . Yasmin buys 5 pens and 4 notebooks for $9.00 . (i) Form a pair of simultaneous equations to represent this information. (ii) Solve the simultaneous equations to find the cost of a pen and the cost ofa notebook.