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tamerlan381047
@tamerlan381047
July 2022
1
25
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63•(80-a)=693
Второе уровнение
(х+420):8=56
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piksaeva85znayka
63×(80-а)=693
80-а=693÷63
80-а=11
а=80-11
а=69
(х+420)÷8=56
х+420=56×8
х+420=448
х=448-420
х=28
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Answers & Comments
80-а=693÷63
80-а=11
а=80-11
а=69
(х+420)÷8=56
х+420=56×8
х+420=448
х=448-420
х=28