x - y = -1 -2x + y = 5 Tolong jawabannya dong, dikumpulin sekarang :)

Question

Matematika Diposting : 2017-10-12 Diupdate : 2017-10-12 santot404

Pertanyaan

x - y = -1
-2x + y = 5
Tolong jawabannya dong, dikumpulin sekarang :)

Answer 1

x - y = -1
-2x + y = 5
—————— +
-x = 4
x = -4

subs nilai x = -4
x - y = -1
-4 - y = -1
y = -3

Hp = {(-4,3)}

Answer 2

x-y=-1
-2x+y=5
_______ +
-1x = 4
x = -4

x-y = -1
-4 -y = -1
-y= -1 +4
-y= 3
y = -3