Răspunsuri

2014-10-06T14:49:22+03:00
2*b+2*c=2*(b+c)=66=>b+c=66/2=33
185*a+185*b+185*c=185*(a+b+c)=185*(90+33)=185*123=22755
2014-10-06T14:52:17+03:00
2(b + c) = 66
b + c = 66 : 3
b + c = 22
185 * 90 + 185 * (b + c) = 16650 + 185 * 22 = 16650 + 4070 = 20720