 
<translate> Kudin wanke duk wando na Leo shine 10 * 9 = 90 daloli. Tun da jimillar lissafin ya kai dala 140, wannan yana nufin cewa an wanke dukkan rigunan don dala 140 - 90 = 50. Kamar yadda kowace rigar ta wanke a dala 5, Sudsy Laundry ta wanke jimlar 50 / 5 = riguna 10. Saboda haka rigunan da suka ɓace sune 10 - 2 = 8 shirts. Saboda haka, amsar ita ce 8. <eng> The cost of laundering all of Leo’s trousers is 10 * 9 = 90 dollars. Since the total bill was 140 dollars, this means that all the shirts were cleaned for 140 - 90 = 50 dollars. As each shirt is cleaned at 5 dollars, Sudsy Laundry therefore laundered a total of 50 / 5 = 10 shirts. The missing shirts are therefore 10 - 2 = 8 shirts.
Therefore, the answer is 8. 