Question

Sebutkan penyelesaian spldv berikut
#Dengan jalan yg benar dan menggunakan cara seorang matematiks yg benar#

Answer 1

Verified answer

1) y = - x
subtitusi ke pers :
x + 2y = 4
x + 2(-x) = 4
x - 2x = 4
- x = 4
x = - 4
subtitusi ke pers
y = - x
y = - ( -4)
y = 4
hp = ( - 4 , 4)

2) 4x = 2y + 12
4x - 2y = 12
2x + y - 4 = 0
2x + y = 4
eliminasi
4x - 2y = 12
2x + y = 4 |×2
maka
4x - 2y = 12
4x + 2y = 8
-----------------(+)
8x = 20
x = 20/8
x = 5/2
subtitusi ke pers
2x + y = 4
2(5/2) + y = 4
5 + y = 4
y = 4 - 5
y = - 1
hp = ( 5/2 , - 1)

Answer 2

Verified answer

Ni no. 3 nya..

Semoga dapat dipahami