Question

Sistem persamaan berikut dgn menggunakan substitusi x=2y+7 dan 3x-2y=3 cepat ya tolong sekali

Answer 1

Verified answer

Materi : SPLDV

x = 2y + 7

3x - 2y = 3
3(2y + 7) - 2y = 3
6y + 21 - 2y = 3
4y = 3 - 21
4y = -18
y = -18/4
y = -9/2
y = -3,5

x = 2y + 7
x = 2(-9/2) + 7
x = -18/2 + 7
x = -9 + 7
x = -2

Hp = {-2 , -9/2}