А-80=320+350
А-80=670
А=670+80
А=750
590-×=110+260
590-x=370
x=590-370
x=220
А-80=320+350 А-80=670 А=670+80 А=750
590-×=110+260 590-x=370 x=590-370 x=220
А-80=320+350
А-80=670
А=670+80
А=750
590-×=110+260
590-x=370
x=590-370
x=220
А-80=320+350 А-80=670 А=670+80 А=750
590-×=110+260 590-x=370 x=590-370 x=220