Question

Determinatii solutiile reale ale ecuatiei: I 11- I 2x+7I I =14
si 5[ 2(3 I 2x-5I-11)-13] - 27=8

Answer 1

|11-2x+7| |=14⇒|-2x+18|=14⇒  -2x+18=14⇒-2x=14-18⇒-2x=-4⇒x=2
5[2(6x-15)-13]-27=8⇒5(12x- 30-13)-27=8⇒5(12x-43)-27=8⇒60x-215-27=8⇒60x-242=8⇒60x=8+242⇒60x=250⇒x=$\frac{250}{60}$=$\frac{25}{6}$