Selesaikanlah a. 2x – y = 6 3x + y = 4 b. 2x + 3y = 7 7x – y = 13​

Penjelasan dengan langkah-langkah:

a. )

2x – y = 6

3x + y = 4

_______ +

5x = 10

x = 10/5

x = 2

2x – y = 6

2(2) – y = 6

4 – y = 6

y = 4 – 6

y = -2

HP = {2, -2}

b.)

2x + 3y = 7

7x – y = 13 (x3) —> 21x – 3y = 39

2x + 3y = 7

21x – 3y = 39

__________ +

23x = 46

x = 46/23

x = 2

7x – y = 13

7(2) – y = 13

14 – y = 13

y = 14 – 13

y = 1

HP = {1,2}