Solving Equations - Cool math Prealgebra Help Lessons - How to Deal with Fractions & Decimals

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Coolmath Prealgebra
Solving Equations Lesson 6 - Dealing with Fractions & Decimals
(page 1 of 6)
---- This prealgebra lesson explains how to solve equations that have fractions and decimals in them.


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Let's start with fractions:

Solve

This thing would be a lot easier to solve without this fraction...
So, let's make that happen!

If we multiply both sides by 7, we'll be able to ditch that fraction!

Check it out:

7 ( 2/7 + 3x ) = 7 ( 5 ) which gives ((7)(2)/7 + 7(3x) = 7(5) which gives a regular equation 2 + 21x = 35 ditch the 2... 2 - 2 + 21x = 35 - 2 which gives 21x = 33 ditch the 21... 21x/21 = 33/21 which gives x = 33/21 = 11/7

I'll let you check it.

Continued on the next page

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