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Mathematics 8 Online
OpenStudy (anonymous):

Solve the equation. Check the solution.

OpenStudy (anonymous):

D.2

OpenStudy (anonymous):

sorry now does it make sense lol

ganeshie8 (ganeshie8):

yup ! looks last time u posted a diff q wid these options lol

OpenStudy (anonymous):

lol yeah true i copied and pasted it but i forgot to copy the new question lol

ganeshie8 (ganeshie8):

\(\huge \frac{-4}{x+1} = \frac{-1}{x+1} \)

ganeshie8 (ganeshie8):

wat should be our first step ?

OpenStudy (anonymous):

no the bottom on the right is x+5

ganeshie8 (ganeshie8):

see that, i have negative both sides. lets cancel them, as i hate negative numbers

ganeshie8 (ganeshie8):

was just checking u r alert or not lol ;)

OpenStudy (anonymous):

lol yeah im alert trust me good test though

ganeshie8 (ganeshie8):

\(\huge \frac{-4}{x+1} = \frac{-1}{x+5} \)

ganeshie8 (ganeshie8):

like this right

ganeshie8 (ganeshie8):

lets multiply both sides by -1. that gets rid of negatives

OpenStudy (anonymous):

okay n yes its right

ganeshie8 (ganeshie8):

\(\huge \frac{-4}{x+1} = \frac{-1}{x+5} \) multiply -1 both sides \(\huge \frac{4}{x+1} = \frac{1}{x+5} \)

ganeshie8 (ganeshie8):

next, cross multiply u knw how to cross myltiply right ? :)

OpenStudy (anonymous):

4x5 and 1x1 right?

ganeshie8 (ganeshie8):

who ate x's lol

OpenStudy (anonymous):

times lol

ganeshie8 (ganeshie8):

\(\huge \frac{-4}{x+1} = \frac{-1}{x+5} \) multiply -1 both sides \(\huge \frac{4}{x+1} = \frac{1}{x+5} \) cross multiply \(\large 4(x+5) = 1(x+1)\)

ganeshie8 (ganeshie8):

entire bottom thing (x+5) or (x+1) multiplies wid the cornery tops ok

ganeshie8 (ganeshie8):

next, distriibute and simplify a bit

OpenStudy (anonymous):

4x+20=1x+2 right

ganeshie8 (ganeshie8):

\(1 \times 1 = 1\)

ganeshie8 (ganeshie8):

\(1 \times 1 \ne 2\)

OpenStudy (anonymous):

yeah ur right sorry 1

OpenStudy (anonymous):

ok

ganeshie8 (ganeshie8):

im sure u r checking my alerttness nw -.-

ganeshie8 (ganeshie8):

\(\huge \frac{-4}{x+1} = \frac{-1}{x+5} \) multiply -1 both sides \(\huge \frac{4}{x+1} = \frac{1}{x+5} \) cross multiply \(\large 4(x+5) = 1(x+1)\) \(\large 4x+20 = x+1\)

ganeshie8 (ganeshie8):

next, subtract x both sides

OpenStudy (anonymous):

yeah lol how would u do that?

ganeshie8 (ganeshie8):

\(\huge \frac{-4}{x+1} = \frac{-1}{x+5} \) multiply -1 both sides \(\huge \frac{4}{x+1} = \frac{1}{x+5} \) cross multiply \(\large 4(x+5) = 1(x+1)\) \(\large 4x+20 = x+1\) subtract x both sides \(\large 4x+20 = x+1\) -x -x \(\large 3x+20 = 1\)

ganeshie8 (ganeshie8):

\(\huge \frac{-4}{x+1} = \frac{-1}{x+5} \) multiply -1 both sides \(\huge \frac{4}{x+1} = \frac{1}{x+5} \) cross multiply \(\large 4(x+5) = 1(x+1)\) \(\large 4x+20 = x+1\) subtract x both sides \(\large 3x+20 = 1\) subtract 20 both sides \(\large 3x = -19\) divide 3 both sides \(\large x = -\frac{19}{3}\)

ganeshie8 (ganeshie8):

there is the complete solution. Enjoy..

OpenStudy (anonymous):

that isnt an option

OpenStudy (anonymous):

It's C. Your last choice.

ganeshie8 (ganeshie8):

^^ option C :) you sure need to take some rest before moving to next problems... :|

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