Question

7ab - 6a + 4a - ab. Would the answer be 6ab - 2a? Or -8ab - 10a?

Answer 1

the first.

Answer 2

6ab-2a

Answer 3

the order can be changed. so this is also
7ab-1 ab +4a - 6a
7 ab minus 1 ab is 6 ab
4 a minus 6 a is -2 a

Answer 4

7ab - 6a + 4a - ab

7ab - ab - 6a + 4a

(7-1)ab + (-6 + 4)a

(6)a b+ (-2)a

6ab - 2a

Answer 5

5 - x + 3x - 9

Answer 6

what do you think?
5 - 9 + (3x - 1x)

Answer 7

How would i simplify that?

Answer 8

what is 5-9 ?

if you have 3 x's and you take away 1 x, how many x's do you have?

Answer 9

i have the same problem is it 2x-4

Answer 10

If you don't know what 5-9 is
this might help
http://www.khanacademy.org/math/arithmetic/negative-numbers/v/adding-subtracting-negative-numbers

Answer 11

thanks for the website