Ответ:
150*у+350=5600:7
150*у+350=800
150*у=800-350
150*у=450
у=450:150
у=3
_________________
150*3+350=5600:7
800=800
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Ответ:
150*у+350=5600:7
150*у+350=800
150*у=800-350
150*у=450
у=450:150
у=3
_________________
150*3+350=5600:7
800=800