Question

Simplify the following expression: (x − 8y) - (2x − 4y). If the final answer is written in the form Ax + By, what is the value of B?

Answer 1

(x - 8y) - (2x - 4y)
first distribute the negative sign through the parenthesis
can you do that ?

Answer 2

yes

Answer 3

do that and what do you get ?

Answer 4

x-8y-2x-4y

Answer 5

check the sign in front of the 4...is it supposed to be a negative ?

Answer 6

yup

Answer 7

don't we have to combine like terms

Answer 8

what is a negative times a negative ?

Answer 9

a positive

Answer 10

correct....so you will have a positive 4

Answer 11

yep

Answer 12

-8y-4y?????right

Answer 13

so you will have x - 8y - 2x + 4y
now combine like terms

Answer 14

-4y+3

Answer 15

-x - 4y is correct. Ax + By......A = -1.....what does B equal ?

Answer 16

-4y

Answer 17

B is a -4....leave the y out...they just want the number

Answer 18

okay thank you

Answer 19

no problem :)