Odpowiedź:I
x - (1 + 2x) = 5
x - 1 - 2x = 5
- x = 5 + 1
- x = 6
x = - 6
I łączymy z 4
II
1/3(5x + 2) = 1 - x / * 3
5x + 2 = 3(1 - x)
5x + 2 = 3 - 3x
5x + 3x = 3 - 2
8x = 1
x = 1/8
II łączymy z 1
III
2x + 8 = - (6x - 7)
2x + 8 = - 6x + 7
2x + 6x = 7 - 8
8x = - 1
x = - 1/8
III łączymy z 2
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Odpowiedź:I
x - (1 + 2x) = 5
x - 1 - 2x = 5
- x = 5 + 1
- x = 6
x = - 6
I łączymy z 4
II
1/3(5x + 2) = 1 - x / * 3
5x + 2 = 3(1 - x)
5x + 2 = 3 - 3x
5x + 3x = 3 - 2
8x = 1
x = 1/8
II łączymy z 1
III
2x + 8 = - (6x - 7)
2x + 8 = - 6x + 7
2x + 6x = 7 - 8
8x = - 1
x = - 1/8
III łączymy z 2
Szczegółowe wyjaśnienie: