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2x + 5y = 8
x + 5y = 2 _
x = 6
Masukkan x,
2x + 5y = 8
2(6) + 5y = 8
12 + 5y = 8
5y = 8 - 12
5y = -4
y = -4/5
Semoga membantu . . .
x + 5y = 2 | dikali 2 | 2x + 10y = 4 _
-5y = 4
y = -4 / 5
x + 5y = 2
x + 5(-4/5) = 2
x - 4 = 2
x = 6