4ax+3bx-2cx=80 si 4a+3b=2c+16 aflati x


Răspuns :

4 a x + 3 b x - 2 c x = 80  si 4 a + 3 b - 2 c = 16

x (  4 a + 3 b -  2 c ) = 80

x · 16 = 80

x =  80 : 16

x = 5