Resposta :
(2x+3y)/4 = 1 -----------> 2x = 3y (substityui)
(3y+3y)/4 = 1 ---> 6y/4 =1 ---> 6y = 4 --->y = 4/6---> y = 2/3
2x = 3y ---.> 2x = 3 . 2/3 --->. 2x = 2 ----> x = 1
VERIFICANDO:
(2x + 3y)/4 = 2.1 + 3.2/3 = 2+2 = 4/4 = 1
(3y+3y)/4 = 1 ---> 6y/4 =1 ---> 6y = 4 --->y = 4/6---> y = 2/3
2x = 3y ---.> 2x = 3 . 2/3 --->. 2x = 2 ----> x = 1
VERIFICANDO:
(2x + 3y)/4 = 2.1 + 3.2/3 = 2+2 = 4/4 = 1