Question

Himpunan penyelesain dari SPLDV 4x-2y=16 dan x-3y=9

Answer 1

Verified answer

MAPEL = MATEMATIKA
KELAS = 8
BAB = SPLDV

eliminasi nilai x
4x - 2y = 16 |×1
x - 3y = 9 |×4

4x - 2y = 16
4x - 12y = 36
__________-
10y = -20
y = -20/10
y = -2

subtitusi nilai y
4x - 2y = 16
4x - 2(-2) = 16
4x + 4 = 16
4x = 16 - 4
4x = 12
x = 12/4
x = 3

hp = {3,-2}

semoga membantu

Answer 2

Verified answer

Mapel : Matematika
Bab : Sistem Persamaan Linear Dua Variabel (SPLDV)

x - 3y = 9 
       x = 3y + 9

          4x - 2y = 16
4(3y + 9) - 2y = 16
12y + 36 - 2y = 16
               10y = 16 - 36
               10y = -20
                   y = -20/10
                   y = -2

x = 3y + 9
x = 3(-2) + 9
x = -6 + 9
x = 3

HP = {3, -2 }