For what value of x is the rational expression below undefined x-4/4-x

None.

Step-by-step explanation:

The expression

can be rewritten as

(multiplying the denominator by -1)

and then it simplifies to

which is just a constant, and is the same for every value of ; therefore, the expression is undefined nowhere.

im like 90% sure its a meme

step-by-step explanation:

good luck tho

85.3-64 = 21.3

so laura has already added 85.3 grams of chocolate powder and she has gone over the amount specified in the recipe by 21.3 grams

hope i ! have a great  day!