isilah dengan benar plisa

a.
y=3x
8x - 2y = 8
8x - 2.3x = 8
8x - 6x = 8
2x = 8
x = 4
y = 3.4 = 12

c.
y=5x
3x + 2y = 65
3x + 2.5x = 65
3x + 10x = 65
13x = 65
x = 5
y = 5.5 = 25

sisanya selesaikan sendiri ya