Question

solve for u.
and simplify your answer as much as possible
(explain please)

Answer 1

\[\frac{ 1 }{ u-1}=-5\]

Answer 2

multiply both sides by (u-1)
\[\frac{ u-1 }{u- 1 } = -5 \times (u-1)\]

Answer 3

on the left hand side: numerator = denominator, so it simplifies to
\[1= -5 \times (u-1)\]

Answer 4

oh okay

Answer 5

yep, you are right...but theres more to do, you have to solve for 'u'

Answer 6

okay so U = 1 because

\[5u \div 5 =u \]

and then you have to do it to the other side so
\[5\div5=1\]

and i guess that makes it

\[u=1\] ?

Answer 7

@baru

Answer 8

nope...but you are thinking along the right line

Answer 9

lets start from here
\[1 = -5 \times (u-1)\]

Answer 10

divide both sides by (-5) to get
\[\frac{ 1 }{ -5 } = \frac{ -5 }{ -5 } \times (u-1)\]

Answer 11

with me so far?

Answer 12

this again simplifies to
\[\frac{ -1 }{ 5 } = u-1\]

Answer 13

yes I am

Answer 14

okay then
now add 1 to both sides
\[\frac{ -1 }{ 5 } +1 = u-1+1\]

Answer 15

this simplifies to
\[\frac{ -1 }{ 5 } + 1 = u\]

Answer 16

understood? do you know how to simplify this further?

Answer 17

yes I have it now

Answer 18

u can simply further, if you know how to add and subtract fractions

Answer 19

Thank you I got it right you helped a lot! @baru

Answer 20

sure :)