4n - 3 = 7n + 9?

4n - 3 = 7n + 9
4n - 7n = 3 + 9
-3n = 12
n = 12/-3
n = -4

Place the unknown at the left side and the constant at the right,

4n - 7n = 9 + 3

-3n = 12

n = -12/3

n = -4

For this type of question, always remember to:

1) Expand if possible
2) Group like terms
3) Isolate the unknown

Let's solve your question:

4n - 3 = 7n + 9

Group like terms, so I'm going to move the 7n to the left side and the -3 to the right side. Remember when crossing over the equal sign, they become the opposite (so - becomes +, + becomes -, x becomes /, and / becomes x):

4n - 7n = 9 + 3

Now we group all the like terms:

-3n = 12

Last step, isolate n by moving the "times -3" over, which now becomes "divided by -3" since it goes to the opposite when crossed over the equal sign:

n = 12 / -3
n = -4

Hope it helps you understand how to do these questions in the future!

- 12 = 3n
n = - 4

4n - 3 = 7n + 9
-3n - 3 = 9
-3n = 12
n = -4

Does n = -4?

4(-4) - 3 = 7(-4) + 9
-16 - 3 = -28 + 9
-19 = -19

yes

simplify it as an equation. here is the answer; -3=4n+9 then -12=4n then n=-12 / 4 = n=-3

you want to get the n on one side so first subtract 4n from both sides
4n-4n-3=7n+9-4n
-3=3n+9
then subtract the nine from both sides (you want to get n by itself)
-3-9=3n+9-9
-12=3n
then divide by 3 on both sides
-12/3=3n/3
-4=n

First you need to put all the n's on the same side of the equation, and all other things on the other side.

4n - 7n = 9+3

You then do what sums and substractions you can

-3n = 12

You try to get n to be alone, in this case by dividing both sides by -3

n = -4

The general strategy for simple algebra like this is to bring all similar terms to on side, soo.....
Bring the 4n over to the right side and the 9 over to the left.
You get -12=3n.
Then divide by 3 on both sides to get -4=n.

-3n = 12
n = -4

(minus 7n on both sides)
(plus 3 on both sides)
(divide both sides by -3)