Question

An equation is shown below:

4(2x – 5) = 4

Part A: How many solutions does this equation have? (4 points)

Part B: What are the solutions to this equation? Show your work. (6 points)

Answer 1

You want to distribute first, do you know how to do that?

Answer 2

not realy

Answer 3

Multiply The first number by what's inside the parenthesis

What is 4 times 2?

Answer 4

8 and 20

Answer 5

Well yes but what is a negative times a positive?

Answer 6

negative

Answer 7

Right so you would have

8x-20 =4

Do you know what to do from here?

Answer 8

do I add 4 from both sides

Answer 9

Not quite, you want to get rid of the side with the x

So get rid of the -20 first

Answer 10

i don't really get it

Answer 11

wait so do I subtract -20 from both sides

Answer 12

8x-20 =4

So you want to get the x by itself

Answer 13

Do the opposite of subtracting

Answer 14

Yeah you can subtract -20 on both sides

Subtracting a negative is just adding

-- is the same as +

Answer 15

-24

Answer 16

and then 8x=24 then divide that right

Answer 17

Right

Answer 18

is the answer -3

Answer 19

You shouldn't have a negative

Both numbers you divided are positive

Answer 20

But yes it is 3

Answer 21

so it has one solution

Answer 22

Yeh

Answer 23

Thanks