Question

Rezolvati ecuatia in multimea N,efectuind si verificarea
a)8z=160 b)9-1=0 c)5y=18 d)4-2=0

Answer 1

a) z=160:8
z=20 € N
verificare:8×20=160

b) 9-1=0 este fals

c) y=18:5
y=3,5 nu apartine lui N
v:5×3,5=18

d) 4-2=0 este fals

Answer 2

a) 8z=160
x=160:8
x=20

8×a=160
8×20=160
160=160(A)

b) 9-1=0 (F)

c)5×y=18
y= 18:5
y=3.6

5×y=18
5×3.6=18
18=18(A)

d) 4-2=0 (F)