3a - 2b - ab - (a-b+ab)+3ab+b-9

2a +ab-9

Step-by-step explanation:

First, write out what you have:

3a-2b-ab-(a-b+ab)+3ab+b-9

Then, distribute the "-" to the "a-b+ab" inside the parenthesis:

3a-2b-ab-a+b-ab+3ab+b-9

Finally, combine like terms and simplify:

3a-a-2b+b+b-ab+3ab-ab-9

2a-2b+2b+3ab-2ab-9

2a+0+ab-9

2a+ab-9 is you equation fully simplified

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

c - they will have the same distribution

step-by-step explanation:

this is the only one that could make sense. : )