Question

Daca a + b = 48 , b + c = 41 si 4a + 2b + 2c = 223 , atunci a = ............ , b = ............. , c = .............. .

Answer 1

a+b=48
b+c=41
a+2b+c=48+41=89
4a+2b+2c=223
4a+2(b+c)=223
4a+2*41=223
4a=223-82=141
a=35,25
b=48-35,25=12,75
c=41-12,75=28,25