Translate to an Alegebraic expression

Twice d. my answer is 2-d
is this right.
-(y+48)=y-48 is this right

2d

the second is wrong.
-y-48 both y and 48 were postive, multiplied by a negative.

-(y+48)=y+48 is this right.

4(n+)=4n+4 is this right.

F=M+V/2 I do not how to work this.

F= m+v/2 I do not how to work this problem could someone help me

please

To translate the statement "Twice d. my answer is 2-d" into an algebraic expression, you can follow these steps:

1. Start by defining the unknown value as a variable. Let's use the variable "x" in this case.

2. The phrase "Twice d" means multiplying "d" by 2. So, you can write 2d.

3. "My answer" can be represented by the variable "x."

4. Finally, "is" in this context refers to the equality sign "=", and "2-d" means subtracting "d" from 2. Hence, 2 - d can be written as (2 - d).

Bringing it all together, the algebraic expression for the phrase "Twice d. my answer is 2-d" is:

2d = x = 2 - d

Now, let's move on to the second question.

To check if the equation -(y + 48) = y - 48 is correct, you can follow these steps:

1. Start by simplifying each side of the equation.

The left side is -(y + 48), which can be simplified as -y - 48.

The right side is y - 48.

So, the equation becomes:

-y - 48 = y - 48

2. Next, attempt to isolate the variable "y" on one side by adding y to both sides of the equation.

-y + y - 48 = y + y - 48

Simplifying further:

-48 = 2y - 48

3. Now, subtracting 48 from both sides of the equation yields:

-48 - (-48) = 2y - 48 - (-48)

Simplifying gives:

0 = 2y

4. Finally, divide both sides of the equation by 2 to solve for y:

0/2 = 2y/2

Simplifying further gives:

0 = y

Therefore, the final solution to the equation -(y + 48) = y - 48 is y = 0.

Please note that it is essential to double-check and verify the steps to avoid any calculation errors.