How do you write out an equation?

Question

I need help and fast.
The problem is: Write an equation for "the sum of 8 times a number and 7 is twice the number."
Here is an example:"6 times the sum of a number and 12 is 40."
6(N + 12) = 40

That's the format the answer is supposed to go in except for the eqaual sign.
Once again the question is to: write an equation for "the sum of 8 times a number and 7 is twice the number."

Answer 1

when you write an equation, all you have to do is, put "n" in for the number or "a number" which you don't know. So the sum of 8 times(multiplied by) "a number(N)" and(plus) 7 is(equals) twice(two times) "the number"(N)

8xN+7=2xN

Answer 2

"eight times a number": let the number be x, then this is 8*x

"the sum of" add the two parts together 8*x + 7

"is" means equals =, so 8*x + 7 =

what does it equal? "twice the number", 2*x. So then

8*x + 7 = 2*x

That is the equation form of the expression.

You can manipulate the equation into different forms. Subtract 2*x from both sides and get

6*x + 7 = 0

Subtract 7 from both sides to get

6*x = -7

Divide both sides by 6 to get

x = -7/6

Answer 3

The problem is: Write an equation for "the sum of 8 times a number and 7 is twice the number."
Sum--you will add
8 times a number----8x
& 7---It's what you will add
is twice the number---=2x

8x+7=2x

solution: 6x=-7
x=-7/6

Answer 4

Listen to what the problem says
8x+7=2x

Answer 5

8N+7 = 2N