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y-4/-2 = x+4/8
kali silang
8y - 32 = -2x -6
8y= -2x -6 + 32
8y= -2x + 26 : 8
y= -4x + 3 1/4
2. y - (-2)/ 3 -(-2) = x - (-4)/ 5-(-4)
y+4/ 5 = x + 4 / 9
kali silang
9(y+4) = 5(x+4)
9y + 36 = 5x + 20
9y=5x +20 -36
9y= 5x -10 :9
y= dibagi sembilan aja
=
-8y - 32 = 2x + 6
-8y - 2x = 32 + 6
-8y - 2x = 38
2.
=
10y + 20 = 5x + 20
10y - 5x = 20 + 20
10y - 5x = 40