Respostas

2013-12-17T15:51:35-02:00
A)-3(a -2y )+2(4a+6y)=11a 
-3a +6y+ 8a+12y=11a
-3a+8a-11a+6y+12y=0 reduzindo so termos semelhantes
-17a+18y
 
b)4(ay+1)/3 - 3a(2-3y)/2= -1+ay/6
4ay+4/3- 6a+9ay/2=-1+ay/6    mmc(2,3,6)=6

8ay +8 - 18a +27ay -ay+1=0
34ay-18a+9y