Question

Solve \frac{a-1}{a-3} =\frac{a+1}{a-4}" alt="\frac{a-1}{a-3} =\frac{a+1}{a-4}" align="absmiddle" class="latex-formula">

Answer 1

Answer:

$a=\frac{7}{3}$

Step-by-step explanation:

$\frac{a-1}{a-3}=\frac{a+1}{a-4}$

$(a-1)(a-4)=(a-3)(a+1)$

$a^2-5a+4=a^2-2a-3$

$-5a+4=-2a-3$

$-3a+4=-3$

$-3a=-7$

$a=\frac{7}{3}$