Question

1. Solve by Cramer's rule method.
4x - 2y = -4 ; 4x + 3y = 16​

Answer 1

x = 1

y = 4

Step-by-step explanation:

ax + by = e

4x +(-2y) = -4

cx + dy = f

4x + 3y = 16

a = 4

b = -2

c = 4

d = 3

e = -4

f = 16

x = de - bf / ad - cb = -12 - (-32) / 12 - (-8) = 20/20 = 1

y = af - ce / ad - cb = 64 - (-16) / 12 - (-8) = 80/20 = 4