SIMULTANEOUS LINEAR EQUATIONS - PERSAMAAN LINEAR SERENTAK

Example 1 : Solve the simultaneous linear equations below (Selesaikan persamaan linear serentak di bawah)

x - y = 3

3x + y = 9

Solution /Penyelesian : 
Elimination method (Kaedah Hapus)

x - y = 3 ------(1)

3x + y = 9 ---------(2)

(1) + (2)

4x = 12

x = 12/4

x =3

Substitude (Gantikan ) x = 3 into (1)

3 - y = 3

y = 3 - 3

y = 0