Hi, Can you please show me the step-by-step process of this example. Especially the second and third line?

Here is the given:

Any help will be appreciated, thanks

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- Jan 31st 2010, 03:14 AMdavewhite123Please explainhow did he simplified this given?
Hi, Can you please show me the step-by-step process of this example. Especially the second and third line?

Here is the given:

Any help will be appreciated, thanks - Jan 31st 2010, 05:11 AMArchie Meade