Ответ:
5×(2х-4)+5-3х=7×(8-2х)
10х-20+5-3х=56-14х
10х-3х+14х=56+20-5
21х=71
х=71/21
х=3 8/21
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Ответ:
5×(2х-4)+5-3х=7×(8-2х)
10х-20+5-3х=56-14х
10х-3х+14х=56+20-5
21х=71
х=71/21
х=3 8/21