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Mathematics 21 Online
OpenStudy (anonymous):

15+6b-6b =4b-1=6b

OpenStudy (solomonzelman):

Add like terms.

OpenStudy (anonymous):

so 6b+6b+6b+4b what about the 15?

OpenStudy (anonymous):

and the 1

OpenStudy (solomonzelman):

You wrote the problem with 2 equal signs, and it is a little confusing. (I should have seen this right away) Are you sure what you wrote in the light blue box is the correct question ?

OpenStudy (anonymous):

15+6b-6 b=4b-1-6b

OpenStudy (solomonzelman):

yes, that is much better, thank you! Now, lets highlight some terms \(\LARGE\color{black}{ \bf 15\color{red} { +6b } ~\color{red} { -6b } =\color{red} { 4b } -1\color{red} { -6b } }\) add the Bs on eac side, and write what you get down, so that I can see.

OpenStudy (anonymous):

16b or 10b\

OpenStudy (solomonzelman):

Hold on, no -:( You are adding the Bs on each side. Answer the 2 questions. 6b - 6b = ? 4b - 6b = ? After answering these questions, re-write \(\large\color{black}{ \bf 15\color{red} { +6b } ~\color{red} { -6b } =\color{red} { 4b } -1\color{red} { -6b } }\) But in a simplified way (saying after subtracting the Bs)

OpenStudy (anonymous):

first one is 0 second one is negative 2\

OpenStudy (solomonzelman):

yes, so you can re-write it as \(\large\color{black}{ \bf 15\color{red} { +0b } =\color{red} { -2b } -1 }\) which is the same thing as saying, \(\large\color{black}{ \bf 15 =\color{red} { -2b } -1 }\) correct ?

OpenStudy (anonymous):

yes how do you solve it?

OpenStudy (solomonzelman):

Then, you only need to steps left. 1) Add 1 to both sides 2) Divide both sides by -2 I'll start you off... \(\large\color{black}{ \bf 15 =\color{red} { -2b } -1 }\) \(\large\color{blue}{ \bf +1 ~~~~~~~~~~~~+1 }\) can you finish this step and divide BOTH SIDES by -2 ?

OpenStudy (anonymous):

ok i get it \

OpenStudy (solomonzelman):

Can you write what you get as the final answer, when you finish solving this problem? I want to make sure you don't leave with an INcorrect answer.

OpenStudy (anonymous):

-8

OpenStudy (solomonzelman):

Yes, you are correct! That was fast :)

OpenStudy (anonymous):

thanks for the help !!!!

OpenStudy (anonymous):

|dw:1400072445917:dw|

OpenStudy (solomonzelman):

You are welcome \(\Huge\color{black}{ \bf ☺ }\) !

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