Thursday, August 20, 2009

How solve equations with fractions

An equation is a mathematical statement, in symbols, that two things are exactly the same (or equivalent). Equations are written with an equal sign.A fraction (from the Latin fractus, broken) is a number that can represent part of a whole.
The earliest fractions were reciprocals of integers, symbols representing one half, one third, one quarter, and so on. A much later development were the common or "vulgar" fractions which are still used today, and which consist of a numerator and a denominator, the numerator representing a number of equal parts and the denominator telling how many of those parts make up a whole.
Let's see a example on this from 7th grade math equations
Question:-
Solve
3x+x+15/17 x
Answer:-

Here is how to solve equations of this type
3x+x+15/17 x
3x and x are whole numbers and 15/17 is a fraction
So we have to add whole numbers
4x+15/17 x
Now x is present in both termsso we can take x as common
= x(4+15/17)
Now denominators are different ,So we have to take LCD
= x( 68/17 + 15/17 )
= x(83/17)
Is the answer
You can work out more examples like this from free exam papers

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