Which operation will "undo" multiplication?

Question

i need help on my math please help me thank you 

Answer 1

Division will undo mutliplication.

 

Say, a number is multiplied with 3. To get the original number when the product is given, you have to divide the product with 3

Answer 2

Lets use an algebraic expression to support all these solutions.

 

(5 * x) / 5

 

where x is a variable.

 

If 5 divided by 5 is 1, then we end up with x.

 

 

Now we let x=2.

 

(5 * 2) / 5 =

 

10 / 5 =

 

2

 

 

Notice that multiplying by a number, and then dividing the result by that same number, gives us back the value of the variable.

 

 

The goal of performing inverses is to cancel out like terms to simplify an algebraic equation.

 

Division undoes the multiplication.

Subtraction undoes the addition.

nth-root undoes the nth power (you will encounter exponential equations later).

Answer 3

Division.

 

If you multiply, say 5 * 4, then you will get 20

If you then divide 20 ÷ 4 then you will return to your original 5.

 

If we were to look at it like a triangle:

   20

  /   \

 /      \

5-----4

 

5 * 4 = 20

20 ÷ 5 = 4

20 ÷ 4 = 5