14.6.3  Rational Equations Word Problems - Work Rates Part 1

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How to solve work rate problems using rational expressions. These are some of the most common difficult word problems students face. They're actually very easy to set up and solve using rational expressions.
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1/4 + 1/6 = 1/x lcm=12x
3x+2x=12
5x=12
x=12/5
x=2.4
much easier

pitoumil