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KaiStriegel
Oct 19, 2009, 06:40 PM
What's the answer to 2y+18=12-6(y+7)

Clough
Oct 19, 2009, 06:46 PM
Hi, KaiStriegel!

This is a site where you can get help with trying to figure out answers to homework questions. But, it's not one where you can simply put in a homework problem and expect to get an answer without you showing what you've already done to come up with the answer yourself.

If students were just given the answers without knowing how to come up with the answers themselves, how would that be helping the students to learn?

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Thanks!

Unknown008
Oct 20, 2009, 04:08 AM
Well, the first step is to expand the brackets. Then, make sure all the terms in y are on the same side, and the other terms on another. Post your work, to see how you are getting with it.

KISS
Oct 20, 2009, 04:59 AM
2y+18=12-6(y+7)

count y's: 2 = -6; move left ---> 8y =

count #'s: 18 = 12 - 42 ; move right = 12 - 42 -18

8y = 12-42-18

Your turn.

The method reduces mistakes due to signs

mathwiz3502
Oct 25, 2009, 03:19 PM
You simply use inverse operations
2y+18=12-6(y+7)
add 6(y+7)
2y+18+6(y+7)=12
distributive property
2y+18+6y+42
simplify
8y+60=12
subtract 60
8y=-48
divide by 8
y=-6
or
8y=12-42-18
8y=-48
y=-6
pretty simple

jelyan
Nov 1, 2009, 02:58 AM
how to solve this equation using completing the square x²-2x-5=0 with solution plzz help meeeeeee

jelyan
Nov 1, 2009, 03:00 AM
Whats the answer to 2y+18=12-6(y+7)

:confused:

Unknown008
Nov 1, 2009, 03:38 AM
Create your own thread jelyan.

KISS
Nov 1, 2009, 06:50 AM
Jelyn: You just have to finish post #4, which isn't hard. Add a few numbers and divide them by 8.