Решите уравнение :а) 7, 14x + 17, 86x = 38 22x = 38 x = 38 : 22 x = б) 199, 29 x - 119,...

Question

Решите уравнение :
а) 7, 14x + 17, 86x = 38
22x = 38
x = 38 : 22
x =
б) 199, 29 x - 119, 29x = 72
80x = 72
x = 80 : 72
x =
в) 84,6x - 44, 6x = 35
40x = 35
x = 35 : 40
x =
г) 39, 49x + 10, 51x = 18
50x = 18
x = 18 : 50
x =
Помогите решить.

Comments

Спасибо, уже ненадо мне.

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Но каму надо вот:

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а) 7, 14x + 17, 86x = 38 22x = 38 x = 38 : 22 x = 1, 72727273б) 199, 29 x - 119, 29x = 72 80x = 72 x = 80 : 72 x = 0, 9в) 84,6x - 44, 6x = 35 40x = 35 x = 35 : 40 x = 0, 875г) 39, 49x + 10, 51x = 18 50x = 18 x = 18 : 50 x = 0, 36

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а) 7,14+17,86=25

Answer 1

А) 7,14х+17,86х=38
25х=38
х=38/25
х=1,52
ПРОВЕРКА : 7,14*1,52+17,86*1,52=38
б) х=0,9      ПРОВЕРКА : 199,29*0,9-119,29*0,9=72
в) х=0,875   ПРОВ