tentukan himpunan penyelesaian dari ×+2y=3 dan 3×-y=-5 dengan metode subtitusi

X + 2y = 3
X = 3 - 2y ......... (1)

Subtitusi
3x -y = -5
3 (3-2y)-y = -5
9- 6y-y = -5
9 -7y = -5
-7y = -5-9
-7y = -14
y = -14/-7
y = 2

x+2y = 3 >>x3>> 3x+6y = 9
3x-y = -5 >>x1>> 3x-y = -5 +
5y = 4
y = 4/5

Sub
x+2y = 3
x+2 (4/5) = 3
x+8/5 = 3
x = 3 - 8/5
x = -5/5
x = -1

Maaf klo slah