Penyesaian dari x/5+y/4 = 12/5 dan x/2-y/3= 1/2 adalah

Diketahui :
– x/5 + y/4 = 12/5
– x/2 – y/3 = ½

Ditanya :
– Nilai x = …..?
– Nilai y = …..?

Penyelesaian :
– Nilai x :
x/5 + y/4 = 12/5
20(x/5 + y/4 = 12/5)
4x + 5y = 48

x/2 – y/3 = ½
6(x/2 – y/3 = ½)
3x – 2y = 3

(4x + 5y = 48) × 2
(3x – 2y = 3) × 5

8x + 10y = 96
15x – 10y = 15
__________ +
23x = 111
x = 111/23
x = 4 19/23

– Nilai y :
3x – 2y = 3
3(111/23) – 2y = 3
333/23 – 2y = 3
– 2y = 3 – 333/23
– 2y = – 264/23
y = 264/23 ÷ 2
y = 132/23
y = 5 17/23

Maaf Kalau Salah