a)
b)
Odpowiedź:
4x + 5 = 2x - 3 / - 5
4x + 5 - 5 = 2x -3 - 5
4x = 2x - 8/ -2x
4x - 2x = 2x - 2x - 8
2x = -8 / :2
x = -4
4x - 8 = 6 - 3x / +8
4x - 8 + 8 = 6 - 3x + 8
4x = -3x + 14 /+3x
4x + 3x = -3x + 14 + 3x
7x = 14 /:7
x = 2
Szczegółowe wyjaśnienie:
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a)
b)
Odpowiedź:
4x + 5 = 2x - 3 / - 5
4x + 5 - 5 = 2x -3 - 5
4x = 2x - 8/ -2x
4x - 2x = 2x - 2x - 8
2x = -8 / :2
x = -4
4x - 8 = 6 - 3x / +8
4x - 8 + 8 = 6 - 3x + 8
4x = -3x + 14 /+3x
4x + 3x = -3x + 14 + 3x
7x = 14 /:7
x = 2
Szczegółowe wyjaśnienie: