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Mathematics 8 Online
Joe348:

Ahem math-

Joe348:

-9-(18v-5)=2(7v-16)-3v

zunairah:

ok

zunairah:

do you know what to do first

Joe348:

uh yeah

Joe348:

i think distrubtuibe

Joe348:

isnt it like -18v-4=14v-32-3v?

zunairah:

you'd have to multiply 9 by 18 and -5 first

zunairah:

*18v

Joe348:

wait what

Joe348:

cant i just remove the parenthesis?

zunairah:

uh no

zunairah:

pretty sure you arent supposed to

Joe348:

well you think you could show me how to do it but no answer

zunairah:

yeah

zunairah:

wait but a qquestion

zunairah:

is there supposed to be - sign after the -9 or no

zunairah:

is it supposed to be -9(18v-5) or -9-(18v-5)

Joe348:

Joe348:

and yeah

zunairah:

oh ok

zunairah:

so first you simplify both sides of the equation

zunairah:

tell me what you get

Joe348:

wym simplify?

zunairah:

I'll just show you

Joe348:

okay thanks lol sorry

zunairah:

−9−(18v−5)=2(7v−16)−3v Distribute the negative sign −9+−1(18v−5)=2(7v−16)−3v −9+−1(18v)+(−1)(−5)=2(7v−16)−3v −9+−18v+5=2(7v−16)−3v Distribute −9+−18v+5=(2)(7v)+(2)(−16)+−3v −9+−18v+5=14v+−32+−3v Combine all Like Terms (−18v)+(−9+5)=(14v+−3v)+(−32) s −18v+−4=11v+−32 −18v−4=11v−32 (sorry if this is confusing i'm bad at explaining without my voice)

zunairah:

So now we have this, −18v−4=11v−32 we're gonna subtract 11v from both sides

zunairah:

you should get this: −29v−4=−32

zunairah:

then add 4 to both sides

zunairah:

you should get this −29v=−28

Joe348:

YAY THXS

zunairah:

LASTLYY divide it by -29 and you should get v= 28/29

zunairah:

yw

Timmyspu:

Do you still need help Joe? Or can you close this?

Joe348:

oh right sorry timmy

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