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Mathematics 7 Online
OpenStudy (benlindquist):

http://prntscr.com/a10953

OpenStudy (benlindquist):

15=2(a+5) 15=2a+10 2a+10=15 ?

OpenStudy (benlindquist):

@Qwertty123

OpenStudy (bunnielover948):

you minus the 10 by itself and 15

OpenStudy (anonymous):

2.5

OpenStudy (qwertty123):

Okay! I can help you go through the steps...

OpenStudy (benlindquist):

milk, i told you i don't want the answers

OpenStudy (benlindquist):

so all you do is subtract 10 from both sides then divide

OpenStudy (anonymous):

15 divided by 2

OpenStudy (anonymous):

equals 7.5

OpenStudy (anonymous):

then take away 5

OpenStudy (anonymous):

equals .........

OpenStudy (the_beast_eli):

lol, yup!

OpenStudy (benlindquist):

ok

OpenStudy (anonymous):

yah

OpenStudy (anonymous):

fan or medal me please

OpenStudy (qwertty123):

Solving 15 = 10 + 2a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2a' to each side of the equation. 15 + -2a = 10 + 2a + -2a Combine like terms: 2a + -2a = 0 15 + -2a = 10 + 0 15 + -2a = 10

OpenStudy (benlindquist):

ok

OpenStudy (anonymous):

you need some milk

OpenStudy (qwertty123):

Add '-15' to each side of the equation. 15 + -15 + -2a = 10 + -15 Combine like terms: 15 + -15 = 0 0 + -2a = 10 + -15 -2a = 10 + -15 Combine like terms: 10 + -15 = -5 -2a = -5 Divide each side by '-2'. When you do that what do you get?

OpenStudy (benlindquist):

-7

OpenStudy (bunnielover948):

Maybe this will help: 2a + 10 = 15 then minus the 10 from both sides to get 2a = 5 then divide the 2 from both sides to get a = ___

OpenStudy (qwertty123):

What is -5 divided by -2?

OpenStudy (benlindquist):

7

OpenStudy (the_beast_eli):

2.5

OpenStudy (the_beast_eli):

lol

OpenStudy (qwertty123):

No not 7.... don't forget the negatives! -5 DIVIDED bye -2!!

OpenStudy (benlindquist):

i thought 2 negatives equals a positive

OpenStudy (benlindquist):

-7

OpenStudy (qwertty123):

Not in this case!

OpenStudy (benlindquist):

ok!

OpenStudy (the_beast_eli):

nope

OpenStudy (qwertty123):

You are not adding! we are DIVIDING!

OpenStudy (benlindquist):

2.5

OpenStudy (the_beast_eli):

yup

OpenStudy (benlindquist):

weird

OpenStudy (qwertty123):

YEAH! :D GREAT JOB! :D

OpenStudy (the_beast_eli):

good job

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