Question

Persamaan linier dua variabel

4x - y = 11
2x + 5y = 19

Tentukan nilai x, dan nilai y

Answer 1

Verified answer

4x - y = 11
4x + 10y = 38
———————— --
-11y = -27
y = 27/11

2x+5y=19
2x + 5(27/11) = 19
2x = 19-135/11
2x = 209/11 - 135/11
x = 74(2)/11
x = 288/11
x = 22 46/11

Hp = {288/11, 27/11}