Question

Como resolver esse sistema ? :3

$\left \{ {{3a+1c=1} \atop 4a+6c = 0}} \right.$

Answer 1

(3a + c)*6 = 1 * 6 
18a + 6c = 6
4a   + 6c = 0
-----------------
14a = 6 
a = 6/14 = 3/7
3/7 * 3 + c = 1
9/7 + c = 1 
c = -2/9