<PRE><B>Question 222796</B>
How do you add and subtract the variables like:  5x-7(2-4x)


Multiply out the terms to get rid of the parenthesis and collect like terms (in this example x).


{{{5x-7(2-4x)= 5x-7*2+(-7)*(-4)x= 5x-14+28x=5x+28x-14=(28+5)x-14=33x-14}}}


ANSWER:  5x-7(2-4x)=33x-14


I hope the above steps were helpful.


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Good luck in your studies!


Respectfully,
Dr J</PRE>