Tentukan Hp dari: 1.2x-y=14 x+3y=0 2.3x-y=5 x+3y=5 3. x+3y=5 x+y=13 4. x-5y=-27 2x+y=1

tak kasih contoh no 1
2x _ y = 14. x 1
x + 3y =0. x 2

2x _ y = 14
2x + 6y = 2
__________ _
_ 7y = 12
y = _ 12/7

2x _ y = 14
2x _ ( _ 12/7 ) = 14
2x = 98/6 _ 12/7 = 86/7

x = 86/7
sisanya kerjakan sendiri