Решите уравнения:(х-2)5=7, х3-2=8, (х+1):4+1=7, 10(х-1)=5,15(х+2)-1=7,10-16х=6

(х - 2) : 5 =7

(x - 2) = 7 * 5

х - 2 = 35

х = 35 + 2

х = 37

Проверка:

(37 - 2) : 5 = 35 : 5 = 7

7 = 7

x : 3 - 2 = 8

x : 3 = 8 + 2

x : 3 = 10

x = 10 * 3

x = 30

Проверка:

30 : 3 - 2 = 10 -2 = 8

8 = 8

(x +1) : 4 + 1 = 7

(x + 1) : 4 = 7 - 1

(x + 1) : 4 = 6

x + 1 = 6 * 4

x + 1 = 24

x = 24 - 1

x = 23

Проверка:

(23 + 1) : 4 + 1 = 24 : 4 + 1 = 6 + 1 = 7

7 = 7

10 : (x - 1 ) = 5

x - 1 = 10 : 5

x - 1 = 2

x = 2 + 1

x = 3

Проверка:  

10 : (3 - 1 ) = 10 : 2 = 5

5 = 5

16 : (x + 2) - 1 = 7

16 : (x + 2) = 7 + 1

16 : (x + 2) = 8

x + 2 = 16 : 8

x + 2 = 2

x = 2 - 2

x = 0

Проверка:

16 : (0 + 2) - 1 = 16 : 2 - 1 = 8 - 1 = 7

10 - 16 : x = 6

16 : x  = 10 - 6

16 : x = 4

x = 16 : 4

x = 4

Проверка:

10 - 16 : 4 = 10 - 4 = 6

6 = 6