Răspuns:
a+b=50
b+c=58
a+c=56
a+b+b+c+a+c=50+58+56
2(a+b+c)=164
a+b+c=164:2
a+b+c=82
c=82-50=32
a=82-58=24
b=82-56=26
a+2b+c=24+2·26+32=108
2a+b+c=2·24+26+32=106
a+b+c=24+26+32=82
Răspuns:
Explicație pas cu pas:
a)
a + b = 50
b + c = 58
a + 2b + c = 50 + 58 = 108
b)
a + b = 50
a + c = 56
2a + b + c = 50 + 56 = 106
c)
a + b = 50
b + c = 58
a + c = 56
2a + 2b + 2c = 50 + 58 + 56 = 164
2(a + b + c) = 164
a + b + c = 164 : 2 = 82
___________
d)
a + b + c = 82
a+b = 50 rezulta c = 82 - 50 = 32
b+c=58 rezulta a = 82 - 58 = 24
a+c = 56 rezulta b = 82 - 56 = 26
