Ответ:
Пошаговое объяснение:
4).
14х – 14 = 7(2х - 3) +7
14x - 14 = 14x - 21 + 7
14x - 14 = 14x - 14
14x - 14x = 14 - 14
0 = 0
x є (-∞ ; ∞)
5).
3(х - 2) = х + 2
3x - 6 = x + 2
3x - x = 2 + 6
2x = 8
x = 8 : 2
x = 4
6).
5 – 2(х - 1) = 4 – х
5 - 2x + 2 = 4 - x
7 - 2x = 4 - x
2x - x = 7 - 4
x = 3
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Answers & Comments
Ответ:
Пошаговое объяснение:
4).
14х – 14 = 7(2х - 3) +7
14x - 14 = 14x - 21 + 7
14x - 14 = 14x - 14
14x - 14x = 14 - 14
0 = 0
x є (-∞ ; ∞)
5).
3(х - 2) = х + 2
3x - 6 = x + 2
3x - x = 2 + 6
2x = 8
x = 8 : 2
x = 4
6).
5 – 2(х - 1) = 4 – х
5 - 2x + 2 = 4 - x
7 - 2x = 4 - x
2x - x = 7 - 4
x = 3