Thread: Help Solving Linear Eq

I need help and instructions for solving this problem. If you could list the steps so I understand it would be appreciated.

-7/8c +5.6 = -5/8c - 3.3

ok i got that one now im stuck again x-1/2 +x-2/2 =3

Originally Posted by quarinteen

ok i got that one now im stuck again x-1/2 +x-2/2 =3

Did you mean (x-1)/2 + (x-2)/2 = 3? Brackets are IMPORTANT.

x - 1 over 2 + x - 2 over 2 = 3

Is it:



If it is, then you can multiply everything by 2 to get rid of the fractions.


Or is it:



If it is, you can cancel out the +2 and minus 2 in the middle. Then multiply everything to get rid of the first fraction. Then multiply everything by x to get rid of the other fraction.

EDIT: Nevermind about the x's and c's.

its the top one. I dont know how to do the signs on the computer. Can you write out the steps for me so I understand it. Thank you very much.

It is called LaTeX

Here's a link to the tutorial: LaTeX tutorial


I have told you how to solve it. Multiply everything by 2 to get rid of the fractions. After that, group similar terms and solve for x. Can you solve x yourself?

I multiplied every thing by 2 i get a answer different then the book gives as an answer. I get

2x -2 + 2x - 4 = 6
4x - 6 = 3
4x = 9
x = 9 / 4

but the answer is 9/2

OK here's a hint: When you multiply the fraction by its denominator, in this case it is 2, you effectively cancel it out.

Example:



Do you get it?

No i don't get it. Can you please put out the steps. I am not in school I haven't been for a while. I was attempting to help a friend got to this problem and its bugging me. I just want to know the steps so I can understand. Unfortunately to say I graduated college already im in information security and never use math. My math skills have completely disappeared. Like I said this is just bugging the living daylights out of me...

Here's a way that I hope you understand:

is the same as Correct?

We multiply it by 2. This will make it become:

Now can you see how they cancel eachother out? The multiply by 2 undoes the divided by 2, thus leaving only x-1.

Do you know how to solve it now?