Rational Expressions for Alegbra help

Question

anonymous · Answer

The instructions were you need to find a friend or family member in which you share a common activity that could be done faster by working together. The result is the rational expression 1/20 + 1/30 = 1/x . 1/x represents the amount of time it takes them to finish it together. Problem is I don't really know how to solve rational experssions so well, I know bits and pieces but would like someone to run me through it just to make sure

anonymous · Answer

$$\frac{ 1 }{ 20} + \frac{ 1 }{ 30 } = \frac{ 1 }{ x }$$

anonymous · Answer

simplify the left side

$$\frac{ 1 }{ 12 } = \frac{ 1 }{ x }$$


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