5. Hitunglah nilai – nilai x dan y dengan cara subtitusi dan cara eliminasi, apabila 5x = 12 + 2y dan 3x + 4y – 94 = 0

5x = 12 + 2y
3x + 4y = 94

5x = 12 + 2y
5x - 2y = 12

5x - 2y = 12|× 2
3x + 4y = 94|× 1

10x - 4y = 24
3x + 4y = 94
__________+
13x = 118
x = 118/13

5x = 12 + 2y
590/13 = 12 + 2y
590/13 - 12 = 2y
434/13 = 2y
2y = 434/13
y = 217/13

Maaf Kalau Salah