tolong bantu ya.thanks

Kelas 8 Matematika
Bab SPLD

2x/3 - y/2 = 6

◎◎ dikali 6 ◎◎

4x - 3y = 36

x/2 + y/4 = 2

◎◎ dikali 4 ◎◎

2x + y = 8
y = -2x + 8

4x - 3y = 36
4x - 3 . (-2x + 8) = 36
4x + 6x - 24 = 36
10x = 24 + 36
x = 60/10
x = 6

y = -2x + 8
y = -2 . 6 + 8
y = -12 + 8
y = -4

a - 2b
= 6 - 2 . (-4)
= 6 + 8
= 14