Question

Me ajudemm... por favor
A)3x/2-12=0

B) -9x/2-81=0

C) X/2-x-12=0

D) 81/8+1=0

E) 625 x -7=1
3 5

Answer 1

a)3x/2 - 12 = 0

3x/2 = 12

3x = 12*2

3x = 24

x = 8

b)-9x/2 - 81 = 0

-9x/2 = 81

-9x = 81*2

-9x = 162

-x = 18

x = -18

c)x/2 - x - 12 = 0

x/2 - x = 12

x/2 - 2x/2 = 12

-x/2 = 12

-x = 12*2

-x = 24

x = -24

d)Não há incógnita

e)625x - 7 = 135

625x = 135 + 7

625x = 142

x = 142/625