Răspuns :
140:4=30 rest 20 30 ap cu 4 camere
30x4=120camere
140-120=20
20:2=10 ap cu 2 camere
30x4=120camere
140-120=20
20:2=10 ap cu 2 camere
x= ap. cu 2 camere
y = " " 4 "
x+y =45 ap. x=45-y
2x +4y =140 camere
2(45-y ) +4y =140
90-2y +4y =140
2y =140-90
2y=50
y =25
x=45-y
x=45-25 =20
(verif : 2*20 +4*25 =140 )
y = " " 4 "
x+y =45 ap. x=45-y
2x +4y =140 camere
2(45-y ) +4y =140
90-2y +4y =140
2y =140-90
2y=50
y =25
x=45-y
x=45-25 =20
(verif : 2*20 +4*25 =140 )