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Mathematics 9 Online
iYuko (iyuko):

Simplify Rational Expressions. Tutorial! Check it Out!

iYuko (iyuko):

Recall that a rational number is a number that can be written as 1 integer divided by another integer such as \[3÷4~ or ~34\] A rational expression is an algebraic expression divided by another algebraic expression. Such as \[(3x+2)÷(x+4) ~~or ~~ 3x+2x+4\]

iYuko (iyuko):

The last fraction is sometimes called a fractional algebraic expression. There is a special restriction for all fractions, including fractional algebraic expressions. The denominator of the fraction cannot be 0. For example, in the expression \[3x+2x+4\] The denominator cannot be 0. Therefore, the value of x cannot be -4.

iYuko (iyuko):

We discovered that fractions can be simplified in the following way. \[\frac{ 15 }{ 25 }=\frac{ 3\times5 }{ 5\times3 }= \frac{ 3 }{ 5 }\] This is sometimes referred to as the basic rule of fractions. And can be stated as follows:

iYuko (iyuko):

BASIC RULE OF FRACTIONS: For any polynomials a, b, c \[(b \neq0~~and~~ c \neq0)\] \[\frac{ ac }{ bc }=\frac{ a }{ b }\]

iYuko (iyuko):

Thanks for deleting my perfectly good tutorial

TheSmartOne (thesmartone):

o_0

TheSmartOne (thesmartone):

Who deleted it?

iYuko (iyuko):

@Whitemonsterbunny17

TheSmartOne (thesmartone):

She isn't online... And the post isn't deleted...

iYuko (iyuko):

She was here then I noticed it was closed.

iYuko (iyuko):

is just looking around

TheSmartOne (thesmartone):

No http://prntscr.com/92dhid

iYuko (iyuko):

Well she was here.

TheSmartOne (thesmartone):

spraguer bug? o_0

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