what is the answer to this one:3(4n-2)+7=71-2n?

Question

algerbra

Answer 1

3(4n-2)+7=71-2n distribute [ (3*4n)-(3*2)]
12n-6+7=71-2n get variables on 1 side
12n+1=71-2n
-1 -1
12n=70-2n
+2n +2n get 3's on the other
14n=70 get variable by itself
/14 /14
n=5 -Answer

*( Don't forget PEMDAS)*
Parenthesess
Exponents

Multiplication
Division >which ever comes first in the problem

Addition
Subtraction >which ever comes first in the problem

Answer 2

5

Answer 3

3(4n-2)+7=71-2n
12n - 6 + 7 = 71 - 2n
14n = 70
n = 70 / 14
n = 5

Answer 4

First you expand the phrase in parentheses:

12n-6+7 = 71-2n
Then combine the numbers on the left, and add 2n to both sides:

14n+1 = 71
then subtract 1 from both sides

14n = 70
then divide both sides by 14:

n = 70/14 = 5

That wasn't so hard, was it?

Answer 5

Distribute the three to (4n-2)
12n-6+7=71-2n 12n+1=71-2n
Subtract 1 from each side
12n=70-2n
Add 2n to each side
14n=70
Divide 14 from each side
n=5

Use purplemath.com to learn this yourself.

Answer 6

Please use ADD DETAILS and show us what YOU think the steps are. Go as far as you can through the steps. Once everyone can see what you're doing, it's much easier to pinpoint where you need help. That way you'll be getting actual HELP rather than someone just spoonfeeding you the answer.

Just remember, start with the correct order of operations, combine like terms if possible, and then get that variable by itself. Whatever you do to one side of the equation, you must do to the other. This is a very easy algebra problem. You can do it! Give it a try (use ADD DETAILS) and then I'll help you step by step.

Answer 7

3(4n-2)+7=71-2n
12n-6+7=71-2n
12n+1=71-2n
14n=70
n=5

Answer 8

12n-6+7=71-2n
12n+1=71-2n
14n=70
n=5

Answer 9

5
distributive property

Answer 10

n=5.1