Question

if dx= -18 and D=3 are the values of the determinants for a certain simultaneous equation in x and y, find the value of x

Answer 1

X = - 6
Because When, we put in the equation of dx
Given, dx= - 18
If we multiply these equation
-1 * 3= - 3
-2*3= - 6
-3*3= - 9
-4*3= - 12
-5 *3 = - 15
-6*3 = - 18
So, the value of x= - 6