Tentukan titik potong garis x+2y = 6 dengan : a. garis x+3y = 3 b. garis 2x-4y= 8
MathSolver74
Eliminasi aja: a) x + 2y = 6 x + 3y = 3 _________ - - y = 3 y = - 3 x = 12 titik potong: (12,-3) b) x + 2y = 6 (kalikan 2) 2x - 4y = 8 (kalikan 1) ___________________ - 8y = 4 y = 1/2 x = 5 titik potong: (5, 1/2)
a) x + 2y = 6
x + 3y = 3
_________ -
- y = 3
y = - 3
x = 12
titik potong: (12,-3)
b) x + 2y = 6 (kalikan 2)
2x - 4y = 8 (kalikan 1)
___________________ -
8y = 4
y = 1/2
x = 5
titik potong: (5, 1/2)