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Ответ:
Пошаговое объяснение:
18:(1+5х) = 4/3
1+5х = 18 : 4/3
1+5х = 13 1/2
5х = 13 1/2 - 1
5х = 12 1/2
х = 12 1/2 : 5 = 25/2 : 5 = 5/2 = 2 1/2
х = 2 1/2
Ответ:
2.5
Пошаговое объяснение:
1+5x = 18*3 : 4
1+5x = 13.5
5x = 13.5 - 1
5x = 12.5
x = 12.5 : 5
x = 2.5