Question

Tentukan hp sistem persamaan brkt dengan metode subtitusi
1/2x - y - 5 = 0
x + 1/3y - 3 = 0

Answer 1

1/2X -Y-5=0
X+1/3Y=0
1/2X-Y=5
-Y=5
Y=-(5-1/2X)
Y= -5+1/2Y
X+1/3(-5+1/2X=3
X+-5/3+1/6X=3
X+1/6X= (3)+(5/3) masing-masing dalam kurung dikali 6
6X+X=18+10
7X = 28
X = 4
Y= -5+1/2X
= -5+1/2x4
= -5+1x2
=-3

HP= {4,-3}