Poziom A
d)2x + 9 = 1
2x = 1 -9
2x = -8 /:2
x = -4
e) 7x - 9 = 5
7x = 5 + 9
7x = 14/:7
x = 2
f) 8x + 5 = -7
8x = -7 -5
8x = -12/:8
x = -3/2
Poziom B
d) 7x - 5 = 6x + 8
7x - 6x = 8 + 5
x = 13
e) 5x -8 = 4x +9
5x - 4x = 9 + 8
x = 17
f) 9x - 4 = 8x + 5
9x - 8x = 5 + 4
x = 9
Odpowiedź:
d) 2x = 1 - 9
2 x = -8 / :2
x = - 4
e) 7x = 5 + 9
7x = 14 / :7
x = 2
f) 8x = -7 - 5
8x = -12 / :8
x = - 12/8 = - 3/2
Poziom B
7x - 6x = 8+5
x = 13
e) 5x - 4x = 9 + 8
x = 17
f) 9x - 8x = 5 + 4
x = 9
