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SPL2V.ppt
- 1. Oleh : ISNAINI FAHMI, S.Pd
UPTD SMA NEGERI 9 TANGERANG
Jl. H. Jali No. 9 Kelurahan Kunciran Jaya Kecamatan Pinang
Kota Tangerang
- 2. y = 3x + 5
2x + 4y = 34
2x + 4(3x + 5) = 34
2x + 12x + 20 = 34
14x + 20 = 34
14x = 14
x = 1
y = 3(1) + 5
y = 3 + 5
y = 8
- 4. 3x – 5y = 14
2x + 4y = -20
12x - 20y = 56
10x + 20y = -100
22x = -44
x = -2
3(-2) – 5y = 14
-6 - 5y = 14
-5y = 20
y = -4
- 6. 2x + 7y = 48
3x + 5y = 28
6x + 21y = 144
-6x - 10y = -56
11y = 88
y = 8
3x + 5(8) = 28
3x + 40 = 28
3x = -12
x = -4
- 8. 4x + 3y = -19
6x + 5y = -32
12x + 9y = -57
-12x - 10y = 64
-y = 7
y = -7
6x + 5(-7) = -32
6x - 35 = -32
6x = 3
2
1
x
7
,
2
1
Jeff Bivin -- LZHS
- 9. y = -2x - 6
6x + 3y = 11
6x + 3(-2x - 6) = 11
6x - 6x - 18 = 11
- 36 = 11
- 10. x = 5y + 1
2x - 10y = 2
2(5y + 1) - 10y = 2
10y + 2 - 10y = 2
2 = 2