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Mathematics 21 Online
OpenStudy (caitlinnr14):

1/3 (2x − 8) = 4

OpenStudy (bahrom7893):

Multiply everything by 3. What do you get?

OpenStudy (caitlinnr14):

what?

OpenStudy (bahrom7893):

Multiply everything out by 3: \[3*\frac{1}{3}(2x-8)=3*4\]

OpenStudy (bahrom7893):

What do you get when you simplify that?

OpenStudy (caitlinnr14):

wat

OpenStudy (bahrom7893):

Well multiply it out. What do you get? What's \[3*\frac{1}{3}?\]

OpenStudy (caitlinnr14):

1

OpenStudy (bahrom7893):

Okay how about \[3*4\]?

OpenStudy (caitlinnr14):

12

OpenStudy (bahrom7893):

So what is: \[3*\frac{1}{3}(2x-8)=3*4\] when simplified?

OpenStudy (caitlinnr14):

idk

OpenStudy (bahrom7893):

Well you just answered me, it becomes: \[2x-8=12\]

OpenStudy (bahrom7893):

Now add 8 to both sides and then divide both sides by 2: \[2x-8+8=12+8\]\[2x=20\]\[x=10\]

OpenStudy (caitlinnr14):

thxx

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