jawablah pertanyaan di bawah ini
Jawaban:
[tex] \frac{10x - 9}{ - 7x + 18} = - 1 \\ 10x - 9 = 7x - 18 \\ 10x - 7x = - 18 + 9 \\ 3x = - 9 \\ x = - 3 \\ \\ \frac{p + 3}{p - 3 } = -\frac{ - 3 + 3}{ - 3 - 3} \\ = \frac{0}{ - 6} \\ = 0[/tex]
Penjelasan dengan langkah-langkah:
Sistem Persamaan Linear Satu Variabel
.
(10x - 9)/(-7x + 18) = -1
(10x - 9) = -1(18 - 7x)
10x - 9 = -18 + 7x
10x - 9 + 9 = -18 + 7x + 9
10x = -9 + 7x
10x - 7x = -9
3x = -9
x = -9/3
x = -3
.
Substitusi nilai x = p = -3 ke:
(p + 3)/(p - 3) = (-3+3)/(-3-3) = -(3-3)/-(3+3) = (3-3)/(3+3) = 0/6 = 0
Jawaban : C
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