Question

8 ) Resolva as equações .

a ) x - 8 = 14

b) - 2x = 6x + 16

c) 35x = - 16

d) x + 18 = x , sendo U = Z

e ) 10x + 8 = - 12 , sendo U = N

Answer 1

a) x-8=14
x= +8 +14
x= 22
b)-2x=6x +16
-2x -6x=16
8x= 16
x= 16/8
x= 2
c)35x=-16
x= -16/35
d)x+18=x
x -x= -18
-18
e)10x+8=-12
10x= -8 -12
x=20/10
x=2