Altetnatif Penyelesaian :
Nomor 1, 3, dan 4 ada di lampiran!!!
Nomor 2 (a)
4x - y = 17
y = 4x - 17 ... persamaan 1
2x + 3y = 19 ... persamaan 2
2x + 3(4x - 17) = 19
2x + 12x - 51 = 19
2x + 12x = 19 + 51
14x = 70
x = 70/14
x = 5
y = 4x - 17
y = 4(5) - 17
y = 20 - 17
y = 3
Jadi, HP = {5, 3}
Nomor 2 (b)
3x - y = 7
y = 3x - 7 ... persamaan 2
6x + 8y = 4 ... persamaan 1
6x + 8(3x - 7) = 4
6x + 24x - 56 = 4
6x + 24x = 4 + 56
30x = 60
x = 60/30
x = 2
y = 3x - 7
y = 3(2) - 7
y = 6 - 7
y = -1
Jadi, HP = {2, -1}
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Altetnatif Penyelesaian :
Nomor 1, 3, dan 4 ada di lampiran!!!
Nomor 2 (a)
4x - y = 17
y = 4x - 17 ... persamaan 1
2x + 3y = 19 ... persamaan 2
2x + 3(4x - 17) = 19
2x + 12x - 51 = 19
2x + 12x = 19 + 51
14x = 70
x = 70/14
x = 5
y = 4x - 17
y = 4(5) - 17
y = 20 - 17
y = 3
Jadi, HP = {5, 3}
Nomor 2 (b)
3x - y = 7
y = 3x - 7 ... persamaan 2
6x + 8y = 4 ... persamaan 1
6x + 8(3x - 7) = 4
6x + 24x - 56 = 4
6x + 24x = 4 + 56
30x = 60
x = 60/30
x = 2
y = 3x - 7
y = 3(2) - 7
y = 6 - 7
y = -1
Jadi, HP = {2, -1}
sekian jawaban dari saya
semoga bermanfaat