Tentukan titik potong persamaan garis x + 2y - 10 = 0 dan 2x - y - 15 = 0

x+2y-10=0 => x+2y = 10 |×2|
2x-y-15=0 => 2x-y = 15 |×1|

2x+4y = 20
2x-y = 15
________ __
5y = 5
y = 5/5
y = 1

x+2y = 10
x = 10-2y
x = 10-2×1
x = 10-2
x = 8

titik potongnya (8, 1)

smg mmbantu