tentukan nilai variabelnya

Mapel : Matematika
Kelas : VII SMP
Bab : Aljabar dasar

Pembahasan :
3t + 2 = -1/2
3t = -1/2 - 2
3t = -3/2
t = -1/2

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3(n + 4) = 2(n - 1/4)
3n + 12 = 2n - 1/2
6n + 24 = 4n - 1
6n - 4n = -1 - 24
2n = -25
n = -25/2

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4 - 1/w = 2/3
12 - 3/w = 2
3/w = 10
W = 3/10

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3/(t + 1) - 5/t = 3
(3t - 5t - 5)/(t² + t) = 3
-2t - 5 = 3t² + 3t
3t² + 5t + 5 = 0

t = {}

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4/(x - 2)(x + 1) - 4/(x + 1) = -3/(x - 1)
(4 - 4x + 8)/(x - 2)(x + 1) = -3/(x - 1)
(12 - 4x)/(x - 2) = -3
12 - 4x = -3x + 5
-3x + 4x = 12 - 5
x = 7