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Mathematics 16 Online
OpenStudy (anonymous):

How/Where do i start? 1/2(2x+2)-1/4(3x-1)=15

OpenStudy (anonymous):

Distribute first.

OpenStudy (anonymous):

the 1/2 to the 2x and 2?

OpenStudy (anonymous):

Yes. :)

OpenStudy (anonymous):

Same for -1/4

OpenStudy (anonymous):

do i do the inverse of 1/2?

OpenStudy (anonymous):

or do i put the 2x over 1?

OpenStudy (anonymous):

No, just distribute what you see.

OpenStudy (anonymous):

D:

OpenStudy (anonymous):

what is half of 2?

OpenStudy (anonymous):

uh 1?

OpenStudy (anonymous):

2. something

OpenStudy (anonymous):

xD

OpenStudy (anonymous):

2.5

OpenStudy (anonymous):

Yeah, 1, so you're canceling out the 2(x) by / 2

OpenStudy (anonymous):

so you have x + 1 after distributing that part

OpenStudy (anonymous):

Do you understand that?

OpenStudy (anonymous):

yus kinda

OpenStudy (anonymous):

kinda lost o;

OpenStudy (anonymous):

Think of it like this 1/2(2x + 2) = 1/2(2x) + 1/2(2)

OpenStudy (anonymous):

lol i know that part

OpenStudy (anonymous):

I just dont get how you mulitied 1/2 and 2

OpenStudy (anonymous):

1/2 = 0.5 0.5 * 2 = 1

OpenStudy (anonymous):

I see o;

OpenStudy (anonymous):

-1/4(3x-1) is the same.

OpenStudy (anonymous):

Although you'll have to use some fractions for this one.

OpenStudy (anonymous):

isss it -7.5?

OpenStudy (anonymous):

for -1/4 times 3

OpenStudy (anonymous):

;oo

OpenStudy (anonymous):

-1/4 * 3/1 -1/4 * 12/4 -1*12 -12

OpenStudy (anonymous):

I took half of 1/4 o;

OpenStudy (anonymous):

xD

OpenStudy (anonymous):

Wait, it's just -3/4.

OpenStudy (anonymous):

https://www.youtube.com/watch?v=ZxEazBfPVFg

OpenStudy (anonymous):

So we have -3/4 + -1/4

OpenStudy (anonymous):

-3/4 + -1/4 = -1

OpenStudy (anonymous):

o:

OpenStudy (anonymous):

now what ;D

OpenStudy (anonymous):

x + 1 - 1 = 15

OpenStudy (anonymous):

do you add the fractions?

OpenStudy (anonymous):

I just did, the fractions total at -1.

OpenStudy (anonymous):

oh o:

OpenStudy (anonymous):

so you have to solve for x. x + 1 - 1 = 15

OpenStudy (anonymous):

hmm

OpenStudy (anonymous):

Combine like terms.

OpenStudy (anonymous):

it couldnt be 2 though o;

OpenStudy (anonymous):

what is 1 minus 1?

OpenStudy (anonymous):

oh o_o 0

OpenStudy (anonymous):

x + (1 - 1) = 15

OpenStudy (anonymous):

but none of the answers is 15 o;

OpenStudy (anonymous):

i mean xD

OpenStudy (anonymous):

nvm o;

OpenStudy (anonymous):

so whats the answer D:

OpenStudy (anonymous):

15.

OpenStudy (anonymous):

Unless it's 55.

OpenStudy (anonymous):

Is 55 a choice?

OpenStudy (anonymous):

yus

OpenStudy (anonymous):

Yeah go with that. I messed up the operations.

OpenStudy (anonymous):

its okay cx

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