Bagian a.
Eliminasi
3x + 5y = 5 (×3)
2x + 3y = 3 (×5)
Menjadi
9x + 15y = 15
10x + 15y = 15
__________ _
-x = 0
x = 0
Substitusi
2x + 3y = 3
2(0) + 3y = 3
0 + 3y = 3
3y = 3
y = 3/3
y = 1
Bagian b.
9x + 5y = 19 (×2)
3x - 2y = -1 (×5)
18x + 10y = 38
15x - 10y = -5
__________ +
33x = 33
x =33/33
x = 1
3x - 2y = -1
3(1) - 2y = -1
3 - 2y = -1
-2y = -1 + 3
-2y = 2
y = 2/-2
y = -1
Bagian c.
3x + 4y = 14 (×3)
4x - 3y = 2 (×4)
9x + 12y = 42
16x - 12y = 8
25x = 50
x = 50/25
x = 2
3x + 4y = 14
3(2) + 4y = 14
6 + 4y = 14
4y = 14 - 6
4y = 8
y = 8/4
y = 2
Semoga membantu
[nutnut2]
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Bagian a.
Eliminasi
3x + 5y = 5 (×3)
2x + 3y = 3 (×5)
Menjadi
9x + 15y = 15
10x + 15y = 15
__________ _
-x = 0
x = 0
Substitusi
2x + 3y = 3
2(0) + 3y = 3
0 + 3y = 3
3y = 3
y = 3/3
y = 1
■》Kesimpulan
Bagian b.
Eliminasi
9x + 5y = 19 (×2)
3x - 2y = -1 (×5)
Menjadi
18x + 10y = 38
15x - 10y = -5
__________ +
33x = 33
x =33/33
x = 1
Substitusi
3x - 2y = -1
3(1) - 2y = -1
3 - 2y = -1
-2y = -1 + 3
-2y = 2
y = 2/-2
y = -1
■》Kesimpulan
Bagian c.
Eliminasi
3x + 4y = 14 (×3)
4x - 3y = 2 (×4)
Menjadi
9x + 12y = 42
16x - 12y = 8
__________ +
25x = 50
x = 50/25
x = 2
Substitusi
3x + 4y = 14
3(2) + 4y = 14
6 + 4y = 14
4y = 14 - 6
4y = 8
y = 8/4
y = 2
■》Kesimpulan
Semoga membantu
[nutnut2]