Pls EXPLAIN q27 from the picture below fast..

Dear student,Q. If k+13=2k-13, then find the value of 7k-1305k+125Sol. It is given that;     k+13=2k-13     13+13=2k-k      26=kTherefore, k=26We need to find the value of 7k-1305k+125Put k=26 in 7k-1305k+1257k-1305k+125=7×26 -1305×26 +125              =182-130130+125               =52255Hope, this clears your doubt.Regards

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