Ответ:
11) 5х + 1 = 3х + 1
Переносим слагаемые
5х - 3х = 1 - 1
2х = 0
х= 2
12) 6х - 1 = 11
6х = 11+1
6х = 12
х = 2
13) х - 1 = 7(х-1)
х - 1 = 7х - 7
-7х + х = - 7 + 1
-6х = 6
х = - 1
14) х - 2 = 1 + 4х
-4х + х = 1 + 2
-3х = 3
15) 5х + 5 = 5(х-1)
5х + 5 = 5х - 5
5х - 5х = -5 -5
х = -10
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Answers & Comments
Ответ:
11) 5х + 1 = 3х + 1
Переносим слагаемые
5х - 3х = 1 - 1
2х = 0
х= 2
12) 6х - 1 = 11
6х = 11+1
6х = 12
х = 2
13) х - 1 = 7(х-1)
х - 1 = 7х - 7
-7х + х = - 7 + 1
-6х = 6
х = - 1
14) х - 2 = 1 + 4х
-4х + х = 1 + 2
-3х = 3
х = - 1
15) 5х + 5 = 5(х-1)
5х + 5 = 5х - 5
5х - 5х = -5 -5
х = -10