Question

if a-1/a=3 find a+1/a

Answer 1

Answer:

$\frac{a - 1}{a} = 3 \\ \\ a - 1 = 3a \\ a - 1 - 3a = 0 \\ - 2a - 1 = 0 \\ - 2a = 1 \\ a = \frac{ - 1}{2}$

$\frac{a + 1}{a} = \frac{ \frac{ - 1}{2} + 1}{ \frac{ - 1}{2} } = \frac{ \frac{2 - 1}{2} }{ \frac{ - 1}{2} } = \frac{ \frac{1}{2} }{ \frac{ - 1}{2} } = - 1$

that's is your answer