Răspuns :
38 pahare iaurt......14 pahare smantana....132 lei
36 pahare iaurt......7 pahare smantana......100 lei |×2
72 pahare iaurt.......14 pahare smantana......200 lei
38 pahare iaurt.......14 pahare smantana......132 lei
Scadem cele doua relatii
34 pahare iaurt..........//.....................68 lei
1 pahar iaurt = 68:34 = 2 lei
1 pahar smantana = [132-(38×2)]:14 =
= (132-76):14 =
= 56:14 =
= 4 lei
1 pahar iaurt costa 2 lei
1 pahar smantana costa 4 lei
36 pahare iaurt......7 pahare smantana......100 lei |×2
72 pahare iaurt.......14 pahare smantana......200 lei
38 pahare iaurt.......14 pahare smantana......132 lei
Scadem cele doua relatii
34 pahare iaurt..........//.....................68 lei
1 pahar iaurt = 68:34 = 2 lei
1 pahar smantana = [132-(38×2)]:14 =
= (132-76):14 =
= 56:14 =
= 4 lei
1 pahar iaurt costa 2 lei
1 pahar smantana costa 4 lei
x=iaurt
y = smantana
38x+14y =132
36x+7y =100 I * 2
38x+14y =132
72x+14y =200 I -
-------------------------------
34x / =68
x =68:34 =2 lei
38*2 +14y =132
76+14y =132
14y =132-76 =56
y =56:14 =4 lei
y = smantana
38x+14y =132
36x+7y =100 I * 2
38x+14y =132
72x+14y =200 I -
-------------------------------
34x / =68
x =68:34 =2 lei
38*2 +14y =132
76+14y =132
14y =132-76 =56
y =56:14 =4 lei