Question

rezolvati in multimea N ecuatia:
a)3(1-2x)+8=32
c)1-3(8x-4)=1​

Answer 1

Răspuns:

a)3(1-2x)+8=32

3-6x+8=32

-6x=32-11

x=-21/6=-7/2

c)1-3(8x-4)=1

1-24x+12=1

-24x=1-13

-24x=-12

x=12/24=1/2

Answer 2

Raspuns:

a) 3(1-2x)+8=32

3-6x+8=32

3-6x=24

-6x = 21 => multimea vida pt ca nu 21 nu se imparte la 6

c) 1-3(8x-4)=1

1-(24x-12)=1

1-24x+12=1

-24x+13=1

-24x= - 12 ==> 24x = 12 => x=0,5 ∉ N