15•(x-10)=255
(x-10)=255:15
(x-10)=17
х=10+17
х=27
15×(27-10)=255
255=255
15(x-10)=255
15x-150=255
15x=255+150
15x=405
x=27
15•(x-10)=255
(x-10)=255:15
(x-10)=17
х=10+17
х=27
15×(27-10)=255
255=255
15(x-10)=255
15x-150=255
15x=255+150
15x=405
x=27