Odpowiedź:
Szczegółowe wyjaśnienie:
e) 2x + (-3x + 4) = -4(3x - 1)
2x - 3x + 4 = -12x + 4
11x = 0
x = 0
f) (5 - x) - (x + 1) -9 = -(2x+5)
5 - x - x - 1 - 9 = -2x - 5
2x - x - x = 5 - 5
0 = 0
spełnione dla każdego x ∈ R
g) -(5x + 4) + (x - 1) - (1 - x) = 0
-5x - 4 + x - 1 -1 + x = 0
3x = -6
x = -2
h) 4x - 8 - (x + 3) + 2x = -(2x -3)
4x - 8 - x - 3 + 2x = -2x + 3
7x = 14
x = 2
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Odpowiedź:
Szczegółowe wyjaśnienie:
e) 2x + (-3x + 4) = -4(3x - 1)
2x - 3x + 4 = -12x + 4
11x = 0
x = 0
f) (5 - x) - (x + 1) -9 = -(2x+5)
5 - x - x - 1 - 9 = -2x - 5
2x - x - x = 5 - 5
0 = 0
spełnione dla każdego x ∈ R
g) -(5x + 4) + (x - 1) - (1 - x) = 0
-5x - 4 + x - 1 -1 + x = 0
3x = -6
x = -2
h) 4x - 8 - (x + 3) + 2x = -(2x -3)
4x - 8 - x - 3 + 2x = -2x + 3
7x = 14
x = 2