Szczegółowe wyjaśnienie:
11 + 4•5 - 4•2х = 19
11 + 20 - 8х = 19
31 - 8х = 19
31 - 19 = 8х
12 = 8х /:8
х = 1,5
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Szczegółowe wyjaśnienie:
11 + 4•5 - 4•2х = 19
11 + 20 - 8х = 19
31 - 8х = 19
31 - 19 = 8х
12 = 8х /:8
х = 1,5