rezolvați ecuatiile: C. 5•[2•(3x+2)-11]+2+4=17+4


Răspuns :

Răspuns:

5*(6x+4-11)+2+4=21

30x+20-55+2+4=21

30x=21-20+55-2-4

30x=60

x=60/30

x=2

Răspuns:

5[2(3x+2)-11]+2=17

5(6-7)+2=17

30x - 35+2=17

30x-33=17

30x=17+33

30x=50

x=5 supra 3