Question 711797
{{{7(9+k)=84}}} Start with the given equation.



{{{63+7k=84}}} Distribute.



{{{7k=84-63}}} Subtract {{{63}}} from both sides.



{{{7k=21}}} Combine like terms on the right side.



{{{k=(21)/(7)}}} Divide both sides by {{{7}}} to isolate {{{k}}}.



{{{k=3}}} Reduce.



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Answer:


So the solution is {{{k=3}}}