Автор - 12363393

тендеуди шеш.у-150=700-450.х+200=13+400.х•80=720÷9.60•у=420-120

Ответ

Проверено экспертом

Автор - prettypushkova

у - 150 = 700 - 450

у - 150 = 250

у = 250 + 150

у = 400

- - - - - - - - - - - -

х + 200 = 13 + 400

х + 200 = 413

х = 413 - 200

х = 213

- - - - - - - - - - - -

х · 80 = 720 : 9

х · 80 = 80

х = 80 : 80

х = 1

- - - - - - - - - - - -

60 · у = 420 - 120

60 · у = 300

у = 300 : 60

у = 5

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