Question

Stabiliti ca : ecuatia -3x egal -9
ecuatia x-1 egal -5
solutia in Z* ecuatia -x+6 egal 6.

Answer 1

Răspuns:

x=-9:-3=3

X=-5+1=4

x=0

Answer 2

Răspuns:

-3x=-9

x=9/3

x=3

x-1=-5

x=-5+1

x=-4