## Combine Like Terms

Before you begin solving for a variable on a question on the GED math test, you might need to first simplify the equation by combining like terms. For example:

10n – 27 – 3n = 190

It will be much easier to solve for n once you combine the terms 10n and -3n. The way to do this is to subtract 3n from 10n, since it’s minus 3n.

## Remove Parentheses

You will need to get rid of parentheses in order to solve for a variable. If a number or variable is next to parentheses as in the example below, you need to multiply that number or variable by everything in the parentheses.

3(2n – 4) = 36

## lateesha

i love it

## antwon

great examples they help better then most books i read

## Taninja

I love it I’m not good in math but this site really helping me to understand.

## Jairo

Hi its e again 🙂 umm i was looking at an exmple that got me confused can you explina it it goes like this

-4x +7x = -21

i got it to -4x = -28 then i put -7. so x=-7, but the answere was 7 , cna you explain why it was 7not -7? 😀 thank you!

## Ziyi

Hi,

You should combine the like terms first, -4x and 7x = 3x.

3x = -21

x = -7

So you got the right answer. Must be a typo in the example you’re looking at.

## Jairo

didnt think about combining the like terms! 🙂 that makes it much simpler and easier thank you

## Nicole

your website is a big help i have been preping for my GED for awhile and ive been good on everything but math and now that i found your site im understanding better thank you so much hopefully soon i will have my GED 🙂

## rj

i get errthing up till how n = 8 ????

## Erin R

Because you have to simplify 48/6 6 will go into 6 once and 6 will go into 48 8 times which is 8/1 which is =8 🙂

## Kekesosolo

This site really helps… Thx

## Shonta

I love this thank u so much

## Eric

This website is a BIG HELP! . Thanks! 🙂

## Ivonne

Omg!

This website has helped me tremendously.

I suck at math, and so far i’m understanding everything on this site.

Thanks to whoever made this website.

## martez

How did u get 31

## Nakita Thompson

Hello, I am also confused on how, u came up with 31

. Like alot of other post I’ve read” i to have pass this math test” failed by 20 points. I will pass this time though.. Thanks for your help.

## Chris

Hi, question..How is 3(2n-4)=36? I know 3×2=6 and 3×4=12 but where does the 36 come from?

## janel

please explain the first section…combine like terms. Im confused havnt done much algebra

## adam

Yasaaaaaaaaaaaaay thks alot

## novell

ok im stuck on the first exsample how did you get 190. is it 10×10 and 3×30 wich the answer would give me 190 once i add them together?

## jessi

ok I have a problem that I just cant solve…can u help it’s

2y-8=-3y-18

## Martana

I still don’t get it

## Londyn

What is a combined like term

## Leah Douglas

This is so much easier to understand!Thank you!