Penjelasan dengan langkah-langkah:

Sistem persamaan linear dua variabel

-

soal

(i). 3x + 3y = 3

(ii). 2x - 3y = 7

gunakan cara Substitusi, lalu evaluasi pers (i)

(i). 3x + 3y = 3

» 3x - 3x + 3y = 3 - 3x

» 0 + 3y = 3 - 3x

» 3y = 3 - 3x

lalu substitusikan ke pers (ii)

(ii). 2x - 3y = 7

» 2x - (3 - 3x) = 7

» 2x - 3 + 3x = 7

» 2x + 3x - 3 = 7

» 5x - 3 = 7

» 5x = 7 + 3

» 5x = 10

» x = 10/5

» x = 2 ✓

lalu substitusikan ke 3y = 3 - 3x

3y = 3 - 3x

3y = 3 - 3(2)

3y = 3 - 6

3y = -3

y = -3/3

y = -1 ✓

HP = {2 , -1}

---

#Answer By : 4Rz