Найди устно корни уравнений.
2+б=30. б=_________ (это пример в учебнике а я не понимаю что писать)
5*м=55 ____________
70-с=14 _____________
60:д=5 _____________
а*40=120 _____________
т-39=8 ______________
42:х=14 ___________
к:16=4 _____________
34-у=19 ___________
н+320=410 _________
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