i know the answer to this problem but need someone to explain it to me 3[2x-(x+7)]=5(x-3) solve X.

Question

radar · Answer

I think this problem is to determine if you know the order of operations.
step 1.  Remove the inner parenthesis.
3[2x-x-7]=5x-15
remove brackets
6x-3x-21=5x-15  combining similar terms
3x-21=5x-15      adding 21 and subtracting 5x from both sides
-2x=6     dividing both sides by =2

x=-3

Is this what you got?

anonymous · Answer

yes thats the answer on the key! thank u so much!

radar · Answer

*-2  instead of =2
I am correcting the last line

radar · Answer

it should read:  -2x=6    dividing both sides by -2

radar · Answer

Good luck with your studies.

anonymous · Answer

thanks i'll need it TEST TOMORROW!

radar · Answer

You're getting ready, just relax  and you will do O.K. tomorrow.