Question

tolong di jawab secepat nya dan pakai jalan ​

Answer 1

-x + 4y = 4

3x - 2y = 8

eliminasi x pada persamaan 1 dan 2

-x + 4y = 4

3x - 2y = 8

×3. -3x + 12y = 12

×1. 3x - 2y = 8

__________+

10y = 20

y = 20/10

y = 2

eliminasi y pada persamaan 1 dan 2

-x + 4y = 4

3x - 2y = 8

×2. 2x + 8y = 8

×4. 12x - 8y = 32

___________+

y = 40

Answer 2

Verified answer

CARA JAWABAN

1.)

-x + 4y = 4. (x3) => -3x + 12y = 12.

3x - 2y = 8. (x1) => 3x - 2y = 8 +

10y = 20.

y = 20 ÷ 10 = 2.

3x - 2y = 8.

3x - 2.2 = 8.

3x - 4 = 8.

3x = 8 + 4.

3x = 12.

x = 12 ÷ 3.

x = 3.

Jadi :

HP = {x,y}

HP = {3,2}

2.)

2x + 3y = 3. (x3) => 6x + 9y = 9.

3x - 2y = 11 (x2) => 6x - 4y = 22 -

13y = -13.

y = -13 ÷ 13 = -1.

2x + 3y = 3.

2x + 3.-1 = 3.

2x - 3 = 3.

2x = 3 + 3.

2x = 6.

x = 6 ÷ 2.

x = 3.

HP = {x,y}

HP = {3,-1}