24 June 2012

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

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