Răspuns :
a + b + c + d = 264
a = c + d => a = 70 + d
c = 70
b = c + 22 => b = 70 + 22 b = 92
inlocuim in prima ecuatie pe a, b si c
70 + d + 92 + 70 + d = 264
2d = 264 - 70 - 70 - 92
2d = 28
d = 28 : 2
d = 14
a = 70 + 14
a = 84
verificare:
84 + 92 + 70 + 14 = 260
a = c + d => a = 70 + d
c = 70
b = c + 22 => b = 70 + 22 b = 92
inlocuim in prima ecuatie pe a, b si c
70 + d + 92 + 70 + d = 264
2d = 264 - 70 - 70 - 92
2d = 28
d = 28 : 2
d = 14
a = 70 + 14
a = 84
verificare:
84 + 92 + 70 + 14 = 260
[tex]x+y+z+t=264 \\ x=z+t \\ t=70 \\ y=22+z \\ z+70+22+z+70=264 \\ 162+2z=264 \\ 2z=264-162=102 \\ z=102:2 \\ \boxed{z=51} \\ x=z+t=51+70 \\ \boxed{x=121} \\ y=22+z=22+51 \\ \boxed{y=73}[/tex]