Пошаговое объяснение:
№1
|3х| = 6/7
3 * |х| = 6/7
|х| = 6/7 : 3
|х| = 6/7 * 1/3
|х| = 6/21
|х| = 2/7
х1 = -2/7
х2 = 2/7
№2
|2х - 5| = 3
1)
2х - 5 = -3
2х = -3 + 5
2х = 2
х = 2 : 2
х1 = 1
2)
2х - 5 = 3
2х = 3 + 5
2х = 8
х = 8 : 2
х2 = 4
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Пошаговое объяснение:
№1
|3х| = 6/7
3 * |х| = 6/7
|х| = 6/7 : 3
|х| = 6/7 * 1/3
|х| = 6/21
|х| = 2/7
х1 = -2/7
х2 = 2/7
№2
|2х - 5| = 3
1)
2х - 5 = -3
2х = -3 + 5
2х = 2
х = 2 : 2
х1 = 1
2)
2х - 5 = 3
2х = 3 + 5
2х = 8
х = 8 : 2
х2 = 4