Question

Soal PLDV
4x-3y=1
2x-y=-3
jawab ya

Answer 1

Eliminasi
4x-3y=1 | x 1    4x-3y=1
2x-y=-3  | x 2   4x-2y=-6 _
                          -y = 7
                          y = -7

2x-y=-3
2x- (-7)=-3
2x+7= -3
2x = -3 - 7
 2x =- 10
 = -5

Answer 2

4x - 3y = 1 | x1 ----> 4x - 3y = 1
2x - y = -3 | x3 ----> 6x - 3y = -9 _
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-2x = 10
x = - 5
x = -5 ----> 2x - y = -3
2(-5) - y = -3
-10 - y = -3
y = -7
Hp (himpunan penyelesaian) = {(-5 , -7)}