Tentukan himpunan penyelesaian dari: x+2y=4 2x+y=-2

x + 2y = 4 | kali 2
2x + y = -2 | kali 1
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2x + 4y = 8
2x + y = -2 [ - ]
__________
3y = 10
y = 10/3

x + 2y = 4
x + 2(10/3) = 4
x + 20/3 = 4
x = 4 - 20/3
x = 12/3 - 20/3
x = -8/3

#semoga membantu.....

Mapel : Matematia
Kelas : VII SMP
Bab : SPLDV

Pembahasan :
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