Wednesday, July 10, 2013

SAT math Number and Operations - fractions question

SAT math Number and Operations - fractions question

How can I find x in the following equation:



Answer
http://www.satmath4u.com/threads/41-fractions-SAT-question

To solve an equation with fractions, we transform it into an equation without fractions which we know how to solve. The technique is called clearing of fractions.


Multiply both sides of the equation -every term - by the LCM of denominators. Every denominator will then cancel. We will then have an equation without fractions.

Multiply by 

and we have the following simple equation that has been "cleared" of fractions:




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