👤

aflati nr x si y direct proportionale cu 3 si 5 ,si 7x-2y=33

Răspuns :

x/3=y/5=K
x=3K
y=5K

■=ori
7■3K-2■5k=33
21K-10K=33
11K=33
K=33:11
K=3

x=3■3
x=9
y=3■5
y=15

VERIFICARE:7■9-2■15=33
63-30=33