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Licemer1 [7]
3 years ago
14

Determine for what values of x and y are the following equalities always true.

Mathematics
1 answer:
Agata [3.3K]3 years ago
3 0
(k+1)x-(2k+3)y-3k-5=0
kx + x - 2ky - 3y - 3k - 5 = 0
(x - 2y) k + (x - 3y) = 3k + 5

therefore
x - 2y = 3
x - 3y = 5

Subtract 2 equations
y = -2
x = -1
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x (5/2 , 0)

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6 0
2 years ago
Tentukan Penyelesaian dari persamaan berikut
MArishka [77]
1. 3z + 11 = -28
3z = -39
z = -13

2. 3a - 1 = a + 9
3a - a = 10
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a = 5

3. 2 (3p - 4) = 4p + 6
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4. 1/2x + 4 = 6
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5. 2/3(6x - 9) = 1/4(4x + 12)
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