Question

Rezolvati in multimea numerelor reale ecuatia x-1supra3 +1-2xsupra2=5supra6.

Answer 1

$\frac{x-1}{3}+ \frac{1-2x}{2}= \frac{5}{6}$
amplificam prima fractie cu 2, a doua cu 3 pentru a scapa de numitor
2x-2+3-6x=5
-4x+1=5
-4x=5-1
-4x=4
x=-1