Question

Rezolvati in multimea Z ecuatia: a) 3x+72=0 b) -8y+800=0 c) 22z+440=0

Answer 1

a)
= 3x= -72
X= -72:3= -24
b))
= -8y= -800
Y= -800:(-8)= 100
Y= 100
C))
22z= -440
Z= -440:22= -20
Z= -20

Answer 2

foarte simple
3x+72=0   3x=-72  x=-72/3  x=-24
-8y+800=0  800=8y  y=800/8  y=100
22z+440=0  22z=-440  z=-440/22  z=-20