Odpowiedź :
a) 4x + 2 = 14 |-2
4x = 12 |:4
x = 3
b) 3x + 3 = -2x - 17 |-3
3x = -2x - 20 |+2x
5x = -20 |:5
x = -4
c) 4x - 5 = 8x + 31 |-4x
-5 = 4x + 31 |-31
-36 = 4x |:4
x = -9
:)
a) 4x + 2 = 14 |-2
4x = 12 |:4
x = 3
b) 3x + 3 = -2x - 17 |-3
3x = -2x - 20 |+2x
5x = -20 |:5
x = -4
c) 4x - 5 = 8x + 31 |-4x
-5 = 4x + 31 |-31
-36 = 4x |:4
x = -9
:)