Tentukan persamaan lineir 2 variabel tentukan nilai x, dan Y 1. 4x – 3y – 3 = 0 2. 5x + 3y = -5 2x + 7y – 27 = 0 4x - 5y = 4

Penyelesaian,
Nomor 1
4x-3y-3=0___(1)
2x+7y-27=0__(2)

(1)(2)
4x-3y=3__(1)
2x+7y=27__(2)
→eliminasi nilai x
4x-3y=3 |x1|
2x+7y=27 |x2|
→4x-3y=3
→4x+14y=54
____________-
-17y=-51
y=3→substitusi ke persamaan 1, maka
4x-3y=3
4x-3(3)=3
4x=3+9
4x=12
x=3