Răspuns:
Explicație pas cu pas:
c) 53 + 2·x = x + 111
2·x - x = 111 - 53
x = 58
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d) 23 + 5·x = 2·x + 74
5·x - 2·x = 74 - 23
3·x = 51
x = 51 : 3
x = 17
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e) 32 + 6·x = 11·x - 113
11·x - 6·x = 32 + 113 sau: 6·x - 11x = - 113 - 32
5·x = 145 - 5x = - 145
x = 145 : 5 x = (-145) : ( - 5)
x = 29 x = 29
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f) 8 + 13·x = 2·x + 41
13·x - 2·x = 41 - 8
11·x = 33
x = 33 : 11
x = 3