Question

Solve the following simultaneous equations using Cramer's Rule
m + 3n = 16. ; 4m-2n = - 4​

Answer 1

Step-by-step explanation:

m + 3n = 16. ; 4m-2n = - 4

D = -2-12 = -14

Dm = -12 + 32 = 20

Dn = -4 - 64 = - 68

m = Dm/D = 20/14 = 10/7

n = Dn/D = -68/-14 = 34/7

So (m, n) = (10/7,34/7)