Tolong ya

Jawaban:

SPL2V

5x + 2y = 23 | × 7 |

-x + 7y = -12 | × 2 |

.

Eliminasi

35x + 14y = 161

-2x + 14y = -24

———————– –

35x – (-2x) = 161 – (-24)

37x = 185

x = 185/37

x = 5

.

Subtitusi

5x + 2y = 23

5(5) + 2y = 23

25 + 2y = 23

y = 23 – 25

y = -2

y = –1

Hp = {(5, –1)} > opsi a

Jawaban:

A) {5, -1}

Penjelasan dengan langkah-langkah:

5x + 2y = 23

-x + 7y = -12

[Eliminasi x]

5x + 2y = 23

-5x + 35y = -60

_____________ +

37y = -37

y = -37/37

y = -1

[Substitusi y]

5x + 2y = 23

5x + 2(-1) = 23

5x + (-2) = 23

5x – 2 = 23

5x = 23 + 2

5x = 25

x = 25/5

x = 5

HP = {x, y}

HP = {5, -1} ✔

Keterangan :

Materi = SPLDV