Ответ:
(5x-3)=7
(x-5-3)=7
×-2=7
x=7-2
x=5
(5+5-3)=7
7=7
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Ответ:
(5x-3)=7
(x-5-3)=7
×-2=7
x=7-2
x=5
(5+5-3)=7
7=7