Question

Himpunan penyelesaian dari SPLDV berikut adalah..
x + y = 5
x - y = -1
a. {(3,2)}
b. {(-2,3)}
c.{(2,3)}
d.{(2,-3)}

Answer 1

X + y = 5
x - y = - 1
________ +
2x = 4
x = 2
y = 3

HP: {(3,2)}

Answer 2

X + y = 5
x - y = -1
............... +
2x = 4
x = 4-2 = 2
y = 3

hp : {3,2}