ex 3 va rog dau 54 pct cine face korekt

Ex 3 Va Rog Dau 54 Pct Cine Face Korekt class=

Răspuns :

A) 3
B) 28
C) 16
D) 8
E) 2
F) 18
a) x/6 = 3/6 = 1/2 ; x = 3

b) 14/x = 14/28 = 1/2 ; x = 28

c) 32/4x = 32/4×16 = 32/64 = 1/2; x = 16

d) 5/(x+2) = 5/(8+2) = 5/10 = 1/2; x = 8

e) 5x/20 = 5×2/20 = 10/20 = 1/2; x = 2

f) x/36 = 18/36 = 1/2 ; x = 18