Răspunsuri

2014-09-19T21:19:27+03:00
A + b = 84
6 * a = 3 * b
b = 6a/3
b = 2a
a + 2a = 84
3a = 84
a = 28
b = 2 * 28
b = 56

2014-09-19T21:20:04+03:00
A+b=84
ax6=bx3 simplificam prin 3 si ramane
ax2=b
a+ax2=84
3a=84
a=84:3=28
b=28x2=56