Question

Coroana!!!!!!clik poza!!!!

Answer 1

a) (-3-5+4-2)x( -5x-1-10x1/2)=
=(-8+4-2)x(5-5)
= -6x0
=0

b) 1/3-2/5+6/11x11/4 -2( la impartire a doua fractie se ratoarna si in loc de impartire faci inmultire )

=aduci la acelasi numitor primele fractii 
5/15-6/15 + 3/2-2 = -1/15+3/2 - 2= 2/30+45/30 -60/30= -17/30

coroana ??