Ответ:
(87-x)+720=784
87-x= 784-720
87-x=68
x= 87- 68
x= 19
87-19=68
ізі
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Ответ:
(87-x)+720=784
87-x= 784-720
87-x=68
x= 87- 68
x= 19
87-19=68
ізі