Question

Даю 50 баллов!!!
Срочно!!!

Answer 1

a)
x = - (x- 5)
x = x - 5

x = - x + 5 ==> 2x = 5 ==> x = 2,5
x = x - 5  ==> 0x=-5 

б)
x = x + 14
x = - x - 14

0x = 14 ==> нет реш
2x = - 14 ==> x = -  7

в)
x - 2 = x - 8
x - 2 = - x + 8

0x = - 6 ==> нет реш
2x = 10 ==> x = 5 

г)
x + 3 = x - 7 
x + 3 = - x + 7 

0x = - 10 ==> нет реш
2x = 4 ==> x = 2