Question

Solve the equation f/2 +9=4 how can you isolate the variable F 

Answer 1

Answer:

F= -2.5

Step-by-step explanation:

divide both sides by two in order to isolate f.

by dividing by 2 on the left hand side it cancels out the /2 leaving you with only f

then because you divided the left hand side by 2 you need to do the same on the right therefore giving you -5/2 which equals -2.5

Answer 2

The value of f in the equation is -10.

What is a Variable?

'In mathematics, a variable is a symbol and placeholder for a quantity that may change. In particular, a variable may represent a number, a vector, a matrix, a function, the argument of a function, a set, or an element of a set.'

According to the given problem,

First we need to isolate the variable f:

⇒ $\frac{f}{2}+ 9 = 4$

Now, transposing 9 to the right hand side,

⇒ $\frac{f}{2}$ = 4 - 9

⇒ $\frac{f}{2} = -5$

⇒ f= ( -5 * 2 )

⇒ f= -10

Hence, the required value of the variable f is -10.

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