tolong dijawab semoga yang jawab umurnya panjang

[tex]4x + \: \: y = 7 \: \: \: | \times 2| \\ 3x - 2y = 8 \: \: \: | \times 1| \\ \\ 8x + 2y = 14 \\ 3x - 2y = 8 [/tex]
___________+
[tex]11x = 22 \\ x = 2[/tex]

[tex]4x + y = 7 \\ 4 \times 2 + y = 7 \\ 8 + y = 7 \\ y = 7 - 8 \\ y = - 1[/tex]

⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛

Himpunan Penyelesaian : {(x , y)}
Hp = {(2 , -1)}

⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫

[tex]y - 10x \\ = - 1 - 10 \times 2 \\ = - 1 - 20 \\ = - 21[/tex]