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you need to distribute the numbers outside the parenthesis
but not how
do not know how to find the answer
All you need to do is multiply - into (3b - 15) and the 6 into (2b+5)
the - is basically -1
-(3b - 15)=6(2b+5) -3b+15=12 b +30 -3b-12b=30-15 -15b=15 b=-1
Esteban, I'm going to have to report you for this pattern. You are closing the question as SOON as you get an answer.
you want to leave it open and not do my homework
Esteban, we aren't here to do your homework. We are here to HELP you do your homework. In fact, we are doing you a FAVOR. It is your responsibility to get YOUR homework done, but we understand that that is sometimes difficult and this is why we help. But no, we aren't here to get your homework done for you. This is not the right site for this behavior and not only will it not help you prosper, but it will get you in major trouble in this site. Please use this site for what it is meant for.