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8x-4y=16
3x+4y=17
____________ +
11x=33
x=3
substitusi ke persamaan I
3(3)+4y=17
9+4y=17
4y=8
y=2
tinggal dmasukan deh ke 2x+3y
hitung sndiri ya
4x-2y=8 |x2
---------------------dijumlah
11x = 33
x=3 ⇒ 4(3)-2y=8 ⇒4y=8⇒y=2
2x+3y = 2(3) + 3(2) = 12