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Question 224318: Using Distributive property to simplify:
1. -3(5-2b)-4b = 3.5-3.2b-4b
15-6b-4b =
6b+4b
15+10=25b
dont understand
Answer by rapaljer(4671)   (Show Source):
You can put this solution on YOUR website! I'm not completely sure I understand what the question was but then I see that you used decimal points for multiplication symbols. Also, you forgot to multiply the -3 times the -2b which would give you +6b.
-3(5-2b) - 4b
-15+6b-4b
-15+2b
If you need additional help with this topic, I hope you will check out my own website. I have a LOT of help for you there. To find my website, do a "Bing" Search for my last name "Rapalje". Look for "Rapalje Homepage" near the top of the search list. Then, near the top of my Homepage, look for "Basic, Intermediate and College Algebra: One Step at a Time," select "Basic Algebra" and in "Chapter 1", you will find "Section 1.05 Variables and Substitution" and "Section 1.06 Combining Like Terms and Distributive Property" that directly relate to this problem. This is my own non-traditional explanation that my own students have found MUCH easier to understand than the traditional textbooks. In addition to my explanations, examples and exercises, I have my "MATH IN LIVING COLOR" pages where I solved many of these exercises IN COLOR!!
R^2
Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamone Springs Campus
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