6th grade prealgebra help??? ?

Question

-2d+18-4d=60

how do you do this, i got d= -7,

but i think thats wrong.

if you could go step by step that'd be great :]]

Answer 1

-2d+18-4d=60

-2d - 4d = 60 - 18 (subtract 18 from both sides)

-6d = 42 (combine like terms)

d = 42/(-6) (divide both sides by -6 to get d on its own)

d = -7

You were right!  Well done!

Answer 2

First congrats on trying!

OK -- let's go.

your first step will be to combine your variables (d)

We'll write the equation a bit differently to make that easier to see.

-2d + 18 + (-4d) = 60

Now, add the variables.

-6d + 18 = 60

The next step is to isolate the variable. Remember, if you do something to one side of the equal sign, you must do the same to the other.

-6d + 18 - 18 = 60 - 18

-6d = 42

Now, we have to get the variable alone. So, divide each side by -6

-6d/-6 = 42/-6

d = -7

See! You were right! Congrats!

Answer 3

-2d+18-4d=60   (simplify)

-6d+18=60       (-18)

-6d=42            (/6)

-d = 7      

d= -7

Correct =)

Answer 4

you want to get your variable on the same side. so to do it in this problem you would first subtract 18 from 60.

now you have -2d-4d=42. all you have to do in this step is simplify your variable. you should get -6.

your equation now is -6d=42. to isolate the variable, divide by -6.

you'll get d=-7.

good job, see you're fine.  

Answer 5

Its been a while, but how you can check yourself, since d=-7, put -7 where d would go, and then do the math.

The other people are right on how to work it out, I just had to add my part to it.  

Answer 6

1. combine like terms (-2d and -4d) which equals -6d

2.  subtract 18 from 60

3.  now you have 42, divide it by -6

4.  You are right, it's -7         =)

Answer 7

First, you need to combine like terms.

-2d and -4d can combine to be -6d

So the problem reads: -6d+18=60

Now take care of the numbers without letter. Get rid of the 18 by subtracting the 18 on both sides.

So the problem reads like -6d=42

Divide the -6 by 42 and you get -7. So you're right! :]