Question 336177


{{{21=17+x/3}}} Start with the given equation.



{{{3(21)=3(17+x/cross(3))}}} Multiply both sides by the LCD {{{3}}} to clear any fractions.



{{{63=51+x}}} Distribute and multiply.



{{{0=51+x-63}}} Subtract {{{63}}} from both sides.



{{{-x=51-63}}} Subtract {{{x}}} from both sides.



{{{-x=-12}}} Combine like terms on the right side.



{{{x=(-12)/(-1)}}} Divide both sides by {{{-1}}} to isolate {{{x}}}.



{{{x=12}}} Reduce.



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Answer:


So the answer is {{{x=12}}} 



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