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4x-8=2y
subtitusi ke yang pertama
3x+2(4x-8)=17
3x+8x-16=17
11x=33
x=3
y=2
4x-2y=8 ⇒×2 ⇒ 8x-4y=16 +
11x=33
x= 3
4x-2y=8
12-2y=8
12-8=2y
y=4
2x+3y=2.3 + 3.4 = 18