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3x+4y=17 Ix1I = 3x+4y=17
4x-2y =8 Ix2I = 8x-4y =16
= -5x+0 = 1
= x = -1/5
Lalu disubsitusikan kepersamaan yang diketahui hasilnya ( mencari y)
4x-2y = 8
4(-1/5) - 2y = 8
-4/5 - 2y =8
2y = 4/5 + 8
2y = 4/5 + 40/5
2y = 44/5
y =22/5
lalu di subsitusi kan ke nilai yang dicari
2x+3y = 2(-1/5) + 3 (22/5)
2x+3y = -2/5 + 66/5
2x+3y = 66/5 - 2/5
2x+3y = 64/5