## 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

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

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!

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.

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

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 🙂

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

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 🙂

This site really helps… Thx

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

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How did u get 31

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.

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

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

Yasaaaaaaaaaaaaay thks alot

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?

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

2y-8=-3y-18

I still don’t get it

What is a combined like term

This is so much easier to understand!Thank you!