# SAT Math Prep (11) - The Mysterious Division Bar

One of the simple operation in mathematics, but still leaves people clueless! We live with these people!

*Add, Subtract, Multiply, Divide*! This is a full explanation of the division bar, in depth and over-simplified.

## The Versatility

The following expressions are **ALL** equivalent:

Need I say more? Yeah... Probably. Haha. So, in that case, did you know that simplified fractions are just numbers that don't divide or reduce? Plug in variables, x, y, n, they act the same!

## Operations on Fractions with Whole Numbers

When multiplying a regular number and a fraction, you just multiply it with the top, numerator. When you have a fraction divided by a regular number, you just multiply it with the bottom, denominator.

## Cancelling Stuff

If there is the same number on the top and bottom of a fraction, and they are both multiplying with the rest of the fraction, those numbers can cancel!

## Fraction Divided by a Fraction

Really this is two fractions inside of one fraction. It can be written many ways!

## Question of the Day

#### Solution

Therefore, the answer is 9/20!

steemiteducation (72)7 years agohansenator (57)7 years agoThank you for such a great resteem blog @steemiteducation! I love reading the great posts people make. Much appreciated and best wishes to you!