Question

Rezolvati ecuatiile: a)-(2x-3)x6=54-6x b)-512:(9x-19)-4=120:2 Urgeeeeent!!!!!!!!!!!Dau coronita!!!!!!!!!!

Answer 1

a)  -(2x-3)*6=54-6x

(-2x+3)*6=54-6x

-12x+18=54-6x

-12x+6x=54-18

-6x= 36   | * (-1)

6x=-36

x= -36 :6

x=-6

b) -512:(9x-19)-4=120:2

-512:(9x-19)-4=60

-512:(9x-19)=60+6

-512:(9x-19)= 64

-512=64 * (9x-19)

-512=576x-1216

1216-512= 576x

704=576x   | : 64

11=9x

       11
x= ------
       9