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3x-5y=-4 l x5 l 15x-25y=-20
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10y=100
y=10
5x-3y=20 *maka x=10, y=10
5x-3(10)=20 6x-4y=...
5x-30=20 6(10)-4(10)=...
5x=50 6-40=20
x=10 6x-4y=20
3x - 5y = -4 | ×3 | 9x - 15y = -12
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➡➡➡➡➡➡ 16x = 112
➡➡➡➡➡➡ x = 112 / 16
➡➡➡➡➡➡ x = 7
5x - 3y = 20
5(7) - 3y = 20
35 - 3y = 20
35 - 20 = 3y
15 = 3y
y = 15 / 3
y = 5
6x - 4y
6(7) - 4(5)
42 - 20 = 12
6x - 4y = 12