Răspunsuri

Cel mai inteligent răspuns!
2014-04-23T23:14:07+03:00
3*(-2)*a-2*(-2)(a+3)=18
-6a+4(a+3)=18
-6a+4a+12=18
-2a=18-12
-2a=6
a=-3
3 5 3
2014-04-23T23:17:18+03:00
3a* (-2)- 2* (-2)(a+3)=18
-6a +4(a+3) = 18
-6a +4a +12 = 18
-2a = 18-12
-2a = 6
2a = -6
a = -3
1 2 1