Poin 20, Soal 1, Bantuin plis

Poin 20, Soal 1, Bantuin plis

Penjelasan dengan langkah-langkah:

$frac{4}{(x + 3)} - frac{5}{(x - 1)} = frac{4(x - 1) - 5(x + 3)}{(x + 3)(x - 1)} \ \ = frac{4x - 4 - 5x - 15}{ {x}^{2} - x + 3x - 3 } \ \ = frac{(4x - 5x ) + (- 4 - 15)}{ {x}^{2} + 2x - 3 } \ \ = frac{ - x - 19}{ {x}^{2} + 2x - 3} \ \ = - frac{x + 19}{ {x}^{2} + 2x - 3 }$