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2x-y=5
hilangkan Y nya dengan kalikan silang
x+2y=10 dikali 1 ⇒ x+2y=10
2x-y=5 dikali 2 ⇒ 4x-2y=10
lalu ditambah 2 persamaan yang baru tadi
yaitu 5x=20
x=4
y=3
2x -y = 5
x + 2y = 10
4x - 2y = 10
eliminasi
5x = 20
x = 4
2x - y = 5
y = 8 - 5
y = 3