Inverse Operations (x&/)

By: Me

Math Period 2

Benchmark:

Topic #22:Benchmark:MA.7.2.3: Apply inverse relationships between addition and subtraction, and multiplication and division, to solve one- step problems.

Definition:

Operations that “undo” each other. Multiplying and dividing are inverse operations and so are addition and subtraction.

Example/ Drawing/ Formula:First you do the inverse of multiplying 3 which is dividing

3. That cancels out. Then I do 6/3, which equals 2. Next, you take the 9x and divide by 9 which now means you are left with x. Now you bring the 2

down and divide 2 and 9 (2/9). Therefore, x= 2/9.

Equation: 9x * 3 = 6 9x * 3 = 6

/3 /3 9x 9x = 2 /9 /9

x = 2/9

Create A Question:

Can you solve this equation?

My Question:

14x / 4 = 7

Solution to question:

x= 2

How did I get 2? Here… look at this

Explanation To Question:

What you have to do is do the inverse of dividing 4 which is multiplying 4. That cancels out. Then you do the same to the other side. 7x4=28. Bring that down(28). Next, 14x/14equals it canceling out. X is left over. So, 28/14=2. Therefore, x=2.

14x / 4 = 7

Credits:

I would like to thank:

Google (for the images)Mr. Imamura (for the math)Kahiki ( for helping me to put the image as the background)Mom( for letting me use the computer)

Thank you for watching!!!