4х + 1 = 0
4х = - 1
х = - 1/4
---------------------------------
10х + 9 = 7х
10х - 7х = - 9
3х = - 9
х = - 3
-----------------------------------
8 + 7х= 9х + 4
7х - 9х = - 8 + 4
- 2х = - 4
х = 2
------------------------------------
4(х - 8) = - 5
4х - 32 = - 5
4х = 32 - 5
4х = 27
х = 6 3/4
х = 6,75
--------------------------------------
6(5 - х) = - 8х - 7
30 - 6х = - 8х - 7
-6х + 8х = - 30 - 7
2х = - 37
х = - 18,5
-----------------------------------
2 - 3(2х + 2) = 5 - 4х
2 - 6х - 6 = 5 - 4х
- 6х + 4х = - 2 + 6 + 5
-2х = 9
х = - 4,5
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