Question

could someone please walk me through this problem practice problem:
5. Which of the following is equivalent to
3a + 4b – (–6a – 3b) ?
A. 16ab
B. –3a +b
C. –3a + 7b
D. 9a +b
E. 9a + 7b

Answer 1

First resolve your parentheses.

Do you understand how to get rid of them?

Answer 2

no

Answer 3

9a+7b is your answer

Answer 4

First rewrite the equation:

3a+4b+6a+3b

Now combine like terms

9a+7b

Which is answer E.

Answer 5

You can look at "3a + 4b – (–6a – 3b)" this way:

3a +4b –1(–6a –3b)

Answer 6

i havent taken a math class in 5 years and today i am studding for a placement test i seem to have forgotten alot