Question

Tolong bantuin ya please
sistem persamaan linier 2 variabel
masukkan kedalam metode subtitusi aja
2. 5x+y = 10 dan 4x-2y = -6

Answer 1

5x +y = 10
y= 10 -5x
substitusikan y ke --> 4x -2y = -6
4x -2(10 -5x) = -6
4x -20 +10x = -6
14x -20 = -6
14x= -6 +20
14x = 14
x= 14/ 14
x= 1

y= 10- 5x
y= 10-5(1)
y= 5

Answer 2

Metode substitusi :

5x + y = 10
        y = 10 - 5x

4x - 2y           = -6
4x - 2(10-5x) = -6
4x - 20 + 10x = -6
14x                = 14
    x                = 1

5x + y = 10
5   + y = 10
        y = 5

Jadi,
x = 1
y = 5