a) 8 - 2x = 4x - 4 |+2x
8 = 6x - 4 |+4
12 = 6x |:6
x = 2
b) 7 - 3x = -8 - 8x |+3x
7 = -8 - 5x |+8
15 = -5x |:(-5)
x = -3
c) 11x - 9 = 7x - 5 |-7x
4x - 9 = - 5 |+9
4x = 4 |:4
x = 1
d) 5x + 7 = 6x + 12 |-7
5x = 6x + 5 |-6x
-x = 5
x = -5
e) -6 - 2x = 4x + 6 |-6
-12 - 2x = 4x |+2x
-12 = 6x |:6
x = -2
f) 4x + 10 = 16 - 2x |+2x
6x + 10 = 16 |-10
6x = 6 |:6
x = 1
g) 6x - 7 = 2x + 9 |-2x
4x - 7 = 9 |+7
4x = 16 |:4
x = 4
h) 3x + 8 = 7x - 4 |-3x
8 = 4x - 4 |+4
12 = 4x |:4
x = 3
i) 7 - 5x = 4 - 8x |+8x
7 + 3x = 4 |-7
3x = -3 |:3
x = -1
mam nadzieje że pomogłam
