4a-3=2b+7
------------------------
4a-2b=7+3
4a-2b=10
NOW MY QUESTION IS. i have to divide it by 2, right?
WHY? where did the 2 came from?
so that it will be
2a-b=5

Question

4a-3=2b+7
------------------------
4a-2b=7+3
4a-2b=10
NOW MY QUESTION IS. i have to divide it by 2, right?
WHY? where did the 2 came from?
so that it will be 
2a-b=5

hihi67 · Answer

You did it wrong...

hihi67 · Answer

It's like this:

hihi67 · Answer

4a-3=2b+7
Then I would do plus 3 on both sides.
4a=2b+10

anonymous · Answer

soooo the book i got did it wrong?? -_-" XD

hihi67 · Answer

Oh, sorry, I read it wrong, lol

hihi67 · Answer

You can divide by anything you want, as long as you do it on both sides!

anonymous · Answer

ahhh ok that explains it, thank you, i just dont like how my book doesnt really explains the steps XD

hihi67 · Answer

Thanks man!

anonymous · Answer

no prob:D