answersLogoWhite

0

You need to isolate the variable you want to solve for, on one side of the equation. This involves getting rid of everything else. Note that what you do on one side of the equation, you also have to do on the other side. "Getting rid" of everything else basically means doing the inverse of the operation shown.

Example:

2x + 3 = 21

You might start by getting rid of the 3. For this, you subtract 3 on both sides. Subtracting 3 is the inverse of the operation shown in the equation, adding 3.

2x + 3 - 3 = 21 - 3

2x = 18

Next, you get rid of the 2. Once again, since in the equation there is a multiplication by 2, you divide by 2 - the inverse operation. In this case, you divide by 2 on each side:

2x/2 = 18/2

(2/2)x = 18/2

x = 9

User Avatar

Wiki User

10y ago

Still curious? Ask our experts.

Chat with our AI personalities

ProfessorProfessor
I will give you the most educated answer.
Chat with Professor
JudyJudy
Simplicity is my specialty.
Chat with Judy
EzraEzra
Faith is not about having all the answers, but learning to ask the right questions.
Chat with Ezra

Add your answer:

Earn +20 pts
Q: How do you use inverse opperationto solve an equation or an inequality?
Write your answer...
Submit
Still have questions?
magnify glass
imp