Question 292739


{{{-2.1k+5.6=20.2}}} Start with the given equation.



{{{10(-2.1k+5.6)=10(20.2)}}} Multiply both sides by 10 to clear out the decimals.



{{{-21k+56=202}}} Distribute and multiply.



{{{-21k=202-56}}} Subtract {{{56}}} from both sides.



{{{-21k=146}}} Combine like terms on the right side.



{{{k=(146)/(-21)}}} Divide both sides by {{{-21}}} to isolate {{{k}}}.



{{{k=-146/21}}} Reduce.



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Answer:


So the solution is {{{k=-146/21}}} which approximates to {{{k=-6.952}}}.