Решите уравнения 8 (x-1,4)=56(4,6 - x)×19=14,8(51,32 + x)×0,12=7217,28:(56 - x)=36. Created by Маруська20061. matematika-ru

Решите уравнения 8 (x-1,4)=56(4,6 - x)×19=14,8(51,32 + x)×0,12=7217,28:(56

Fixytup

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8 (x-1,4)=56
x-1,4=56/8
x=1,4+7
x=8,4

(4,6 - x)×19=14,8
87,4-19x=14,8
19x=87,4-14,8
x=72,6/19
x= 726/190
x= 3 78/95

(51,32 + x)×0,12=72
15,32+x=72/0,12
x=600-15,32
x=584,68

17,28:(56 - x)=36
56-x=17,28/36
x=56-0,48
x=55,52

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17011981

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8(х-1,4)=56
х-1,4=56:8
Х-1,4=7
х=7+1,4
х=8,4
Проверка
8(8,4-1,4)=56
1)8,4-1,4=7
2)8*7=56

(4,6-х)*19=14,8
4,6*19-19х=14,8
87,4-19х=14,8
19х=87,4-14,8
19х=72,6
х=726/190
х=3 78/95

(51,32+х)*0,12=72
51,32+х=72:0,12
51,32+х=600
х=600-51,32
х=548,68
Проверка
(51,32+548,68)*0,12=72
1)51,32+548,68=600
2)600*0,12=72

17,28:(56-х)=36
56-х=17,28:36
56-х=0,48
х=56-0,48
х=55,52
Проверка
17,28:(56-55,52)=36
1)56-55,52=0,48
2)17,28:0,48=36

1 votes Thanks 1

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