Ответ:
3,6*6,5=(x-1)*7,8
23,4=7,8x-7,8
-7.8x=-23,4-7.8
-7.8x=-31.2
x=-31,2:(-7,8)
x=4
вот:)
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Ответ:
3,6*6,5=(x-1)*7,8
23,4=7,8x-7,8
-7.8x=-23,4-7.8
-7.8x=-31.2
x=-31,2:(-7,8)
x=4
вот:)