Nilai x+y yang memenuhi : x/4 + y/3 = 5/12 x/2 + y = 1 adalah…

X/4 + y/3 = 5/12 (×12)
~ 3x + 4y = 5
x/2 + y = 1 (×2)
~ x + 2y = 2

3x + 4y = 5 (×1)
x + 2y = 2 (×2)

3x + 4y = 5
2x + 4y = 4
(dikurangi)
x = 1

3x + 4y = 5
3(1) + 4y = 5
4y = 2
y = ½

x + y = 3 + ½ = 3,5 atau 7/2