What is the value of x if x 5 is the solution of the simultaneous equations 4x 3y 19 and 4x 3y 11 *

− 24

Explanation:

Here, a1 =  4, b1 = 3, c1 = 19

a2 = 4, b2 = -3, c2 = -11

∴ Dx = `|(c_1, b_1),(c_2, b_2)| = |(19, 3),(-11, -3)|`

= -57 + 33

= -24